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Medical Laboratory Technology: Methods and Interpretations (2 Volumes)
Ramnik Sood
1:
Laboratory
INTRODUCTION
Primary Laboratory
Secondary Laboratory
Tertiary Laboratory
LABORATORY SET-UP
Laboratory Building and Space
Physical Aspects of a Laboratory
Provisions and Precautions
Fire Prevention
Electrical Installations
Liquified and Compressed Gases
Chemicals and Radioactive Substances
Stores
Staff Safety and Facilities
Basic Laboratory Safety
CODE OF CONDUCT FOR MEDICAL LABORATORY PERSONNEL
ACCIDENTS
Safety Measures in the Laboratory
Hazards in the Clinical Laboratory
Physical Hazards
Electricity
Fire
Usual Causes of Fire in the Laboratory
Fire Fighting Equipment
Should a Fire Occur
Laboratory Equipment
Glassware
Equipment-Related Hazards
Equipment/Materials Employed to Eliminate/Reduce Hazards
Safety with Chemicals/Reagents
Labeling of Hazardous Reagents/Chemicals
SIGNS FOR MEDICAL LABORATORIES
General Laboratory
Laboratory Cautionary
Incompatible Chemicals
Acids
Vapourizing Substances
Others
General Prohibition
General Laboratory
Flammable Chemicals
Storage
Safe Use
Control of Fire Caused by Flammable Chemicals
Corrosive Chemicals
Storage
Safe Use
Toxic, Harmful, and Irritating Chemicals
Storage
Safe Use
Oxidising Chemicals
Storage
Safe Use
Explosive Chemicals
Carcinogens
Storage
Safe Use
ACCIDENTS IN THE LABORATORY
First Aid in Laboratory Accidents
Acid Burns
Acid Splashes on the Skin
Acid Splashes in the Eye
Swallowing Acids
Alkali Burns
Alkali Splashes on the Skin
Alkali Splashes in the Eye
Swallowing Alkalis
Poisoning
Burns Caused by Heat
Severe Burns
Minor Burns
Injuries Caused by Broken Glass
Contamination by Infected Material
Wounds caused by broken glassware containing stools, pus, etc.
If infected material is accidentally sucked into the mouth:
Bodily Damage by Electric Shock
Precautions for the Avoidance of Accidents
Suggested List of First Aid Equipment for Laboratory
Contamination from Infective Material
Precautionary Measures
UNIVERSAL WORK PRECUATIONS (UWP) FOR LAB PERSONNEL (ESPECIALLY IN RELATION TO HIV TRANSMISSION)
Introduction
Components of UWP
Guidelines of Basic Practices and Procedures
Biosafety Regulations for Laboratory Procedures
Sterilization (For Nondisposable Items)
Waste Disposal
Final Disposal
Post-Exposure Care
First Aid
Report
Initial Consultation
Laboratory Testing
Clinical Follow-up
Containing Spills
Collection of Specimen
Transport of Specimen
MEDICO-LEGAL ASPECTS OF CLINICAL PRACTICE
LABORATORY INSTRUMENTS
Microscope
Parts of the Microscope
Stand
Mechanical Adjustments
Focusing Adjustments
Coarse Adjustment
Fine Adjustment
Draw Tube
Inclination
Condenser Adjustments
Aperture Adjustment
Centring of Condenser
Mechanical Stage
Monocular Binocular Microscopes and Digital Microsocpe
Microscope Optics
Objective
Numerical Aperture
Oil Immersion Objectives
Objective Aberrations
Objective qualities
Spring-loaded Objectives
Working of Oil Immersion Objectives
Eyepiece
Condenser and Iris
The Mirror
Light Source
Daylight
Electric Light
Special Applications of the Microscope
Phase Contrast Illumination
Equipment Needed
Method
Importance
Demerits
Dark Ground Illumination
Equipment Needed
Method
Demerits
Importance
Fluorescence Microscopy
Equipment Needed
Importance
Electron Microscope
Basic Principle
Weighing Scales or Analytical Balance
Use and Care
Centrifuge
Relative Centrifugal Force (RCF)
Types of Centrifuge
Hand Centrifuge
Motor-driven Centrifuge
Microhematocrit Centrifuge
Use and Care
Glassware (many items are now made of plastic)
Other Necessary Equipments
Serological Water Bath
Incubator
Hot Air Oven
Reporting Laboratory Tests and Keeping Records
Standardisation
Use of Rubber Stamps
Format
Keeping Records in the Laboratory
Lab Reporter
It Reduces Overload
It Helps Referencing Doctor
It Makes Working Easy
The Computerised System is Easy to Operate
Features and Provisions
Graphs
Accounts
Address Manager
2:
Sterilisation
METHODS COMMONLY USED FOR STERILISATION
Sterilisation by Heat
Dry Heat
Flaming
Red Heat
Hot Air Oven
Moist Heat
Temperature
Boiling
Steam
Steam at 100°C
Prolonged Exposure
Intermittent Heat or Tyndallisation
Principle
Low Temperature Steam
Steam at Temperatures above 100°C (Autoclaving)
Method
Timings
Inspisation
Cold
Not used Clinically
Cold Shock
Freezing
Ultraviolet Radiation
Ionising Radiations
Filtration
Seitz Filter
Colloidion or Gradocol Membranes
Berkefeld and Mandler Filters
Chamberland and Doulton Filters
Sintered Glass
Sand and Paper Pulp Filter
Chemical Sterilisation
Chemicals Used
Glassware Preparation for Use
Selection
Cleaning Glassware
Dichromate Cleaning Solution
Petridishes
Pipettes
Test Tubes
Pasteur Pipettes
Screw-capped Bottles
Glass Slides
Infected Slides
Infected Glassware
Syringes
Choice of Syringes and Needles
New Syringes
Used Syringes
Infected Syringes
Glass Barrel and Metal Plunger Syringes
Needles
Disinfection of Syringes by Boiling
Disposable Sterile Syringes
MODERN DAY DISINFECTION (Commercially available from Bioshields)
Prevention Before Care
Icons Used
Hand Care
HITMAX™ Liquid Microbicidal Handwash Soap Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Medical
Industrial
General
Application
Precautions
Results
Performance Data*
In-virto (suspension testing)
Interpretation
In-vivo Testing
a. Hands are not Artifically Contaminated
Interpretation
b. Hands are Artificially Contaminated
Results
Results
Interpretation
STERIMAX™ Liquid Handrub Antiseptic with Triple Action Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Medical
Industrial
General
Application
Hygienic Hand Disinfection
Surgical Hand Disinfection
Precautions
Performance Data*
In-vitro (suspension testing)
Test solution: Strerimax™
Cell Suspension
Incubation
Results
Interpretation
In-vivo Testing
a. Hands are not Artifically Contaminated
Interpretation
b. Hands are Artificially Contaminated
Results
Results
Interpretation
Antiseptics
General Antispsis
Specialized Antisepsis
ACTALL™ Dual Action Antiseptic Disinfectant Solution Courtesy: Bioshields
Product Composition
Product Concept
Applications Areas
Hospitals
Dentists
Laboratories
Pharmaceuticals
Food and Dairy
Household
Precautions
Performance Data*
In-Vitro (suspension testing)
Test solution: Actall™
Application
Cell suspension
Incubation
Interpretation
Results
SAVINOX PLUS™ Microbicidal Antiseptic Solution Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Hospitals
Dentists
Laboratories
Pharmaceuticals
Food and Dairy
Household
Application
Precautions
Performance Data*
In-vitro (Suspension Testing)
Test solution: Savinox Plus™
Cell suspension
Incubation
Results
Interpretation
Skin Preparatives
Environment and Surfaces
SILVICIDE™ AND SILVICIDE PLUS™ Aerial fumigant and surface and Water Disinfectant Solution Concentrated Aerial fumigant and Surface and Water Disinfectant Solution Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Hospitals
Laboratories
Pharmaceuticals
Food and Dairy
Application
Precautions
Compatibility
Metals
Plastics
Elastomers
Performance Data*
In-Vitro (suspension testing)
Test Solution
Results
Interpretation
AEROSEPT™ Air and Surface Sprayable Disinfectants Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Hospitals
Dentists
Laboratories
Pharamaceuticals
Food and Dairy
Application
Precautions
Compatibility
Metals
Plastics
Elastomers
Performance Data*
In-Vitro (suspension testing)
Test Solution: Aerosept™
Results
Interpretation
Instruments
ACITAR™ High Level Instrument Sterilizing and Disinfectant Solution Courtesy: Bioshields
Product Composition
Product Concept
Application Areas
Hospitals
Dentists
LABORATORY INSTRUMENTS
Application
Activation
Usage
Manual Processing
Rinsing Instructions
a. Manual Processing
b. Automated Processing
Reuse Period
Storage
Disposal
Container Disposal
Compatibility
Metals
Plastics
Elastomers
Precautions
Spills
Contraindications
Warning
Caution
Harmful
Performance Data*
In-Vitro (Suspension Testing)
Test Solution: Acitar™
Laboratory Instruments
Compatibility
Metals
Plastics
Elastomers
Glass
Precautions
Safety
First Aid
Eye Contact
Skin Contact
Ingestion
Inhalation
Emergency Procedures
Fire
Spill
LABSAFE™ Disinfectant Solution for Laboratory Ware Courtesy: Bioshields
Product Composition
Product Concept
Applications Areas
Laboratories
Pharmaceuticals
Food and Diary
Application
As a Cold Sterilant (Without Autoclaving)
As a High Level Disinfectant (with Autoclaving)
Precautions
Compatibility
Metals
Plastics
Elastomers
Glass
Performance Data*
In-Vitro (suspension testing)
Results
Interpretation
3:
SI Units
LITRE
GRAM
MOLE (MOL)
INTERNATIONAL UNIT (U)
CONVERSION FACTORS BETWEEN CONVENTIONAL AND SYSTEM INTERNATIONAL UNITS (SIU)
Hematology
Chemistry
Enzyme
Therapeutic and Toxic Drugs
4:
Fundamental Chemistry
INDICATORS
Solutes, Solvents and Solutions
Solute
Solvent
Solution
Buffer Solution
STRENGTH OF A SOLUTION
Per cent Solutions
Weight Per Unit Weight (w/w)
Weight Per Unit Volume (w/v)
Volume Per Unit Volume (v/v)
Part Dilutions
Molar Solutions
Normal Solutions
Saturated Solution
Standard Solution
Abbreviations and Definition
Atomic Number
Atomic Mass
Isotope
Atomic Weight
Electron Configuration
5:
Urine Analysis
COMPOSITION OF URINE
Physicochemical Characteristics of Urine
Inorganic Constituents per 24 Hours
Organic Constituents per 24 Hours
Cells and Casts
Collection of Urine
Preservation of Specimen
GROSS EXAMINATION OF URINE
Colour and Appearance
Interfering Factors
Reaction
Urine pH
Interfering Factors
Be Careful
Odour
Specific Gravity
Interfering Factors
Urinary Volume
Polyuria
Oliguria
Turbidity
Interfering Factors
CHEMICAL EXAMINATION OF URINE
Tests for Protein
Heat and Acetic acid Test
Interpretation
Sulphosalicylic Acid Test
Paper Strip Method
Quantitative Estimation of Protein in Urine
Bence Jones Protein Tests
1. Heat and Sulphosalicylic Acid
2. Toluenesulfonic Acid
3. Electrophoresis
Interpretation of Proteinuria
Minimal proteinuria (< 0.5 gm/day)
Moderate proteinuria (0.5-3 gm/day)
Marked proteinuria (> 3 gm/day)
Nonrenal causes of proteinuria
Other Important Related Aspects
Collecting Specimen for Orthostatic Proteinuria
Interfering Factors
Mechanisms of Proteinuria
Microalbuminuria
Definition
Microalbuminuria: Diagnostic Relevance
Microalbuminuria Detection
Diabetic Subjects
Nondiabetic Subjects
Microalbuminuria Indirect Latex Slide Test, Microtex® (Courtesy: Tulip Group of Companies)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
For Qualitative Method
For Semiquantitative Method
Materials Provided with the Kit
Reagents
Accessories
Additional Materials Required
Test Procedure
Qualitative Method
Semiquantitative Method
Interpretation of Results
Qualitative Method
Semiquantitative Method
Remarks
Tests for Glucose
Benedict's Qualitative (Semiquantitative) Glucose Test
Benedict's Quantitative Glucose Test
Quantitative Method
Sugar Tests in Urine
Significance of Sugars in Urine
Glycosuria with Hyperglycaemia
Diabetes mellitus
Glycosuria without Hyperglycaemia
Nonglucose Sugars in Urine
Interfering Factors
Ketone Bodies in Urine
Tests for Ketone Bodies
1. Rothera's Test
2. Legal's Test
3. Paper Strip/Tablet Methods (Ketur Test—Boehringer)
4. Diacetic Acid Test (Gerhardt's Test)
Causes of Ketonuria
1. Diabetic
2. Nondiabetic
Clinical Implications
Interfering Factors
Clinical Relevance
Bile Salts
Method
Interpretation
Bile Pigments
1. Foam Test
2. Iodine Ring Test
3. Harrison Test
4. Diazo Test
Causes of Hyperbilirubinuria
Urobilinogen and Urobilin
Urobilinogen
Urobilin (Schlesinger's Test)
Estimated Urobilinogen
Urobilinogen (Quantitative)
Clinical Relevance
Increase in Urinary Urobilinogen
Decrease in Urinary Urobilinogen
Interfering Factors
Porphyrins
Causes
Normal Values
Clinical Relevance
Porphyria
Lead Poisoning
Other Conditions with Increased Levels of Porphyrins
Interfering Factors
Blood in Urine (Haematuria)
1. Guaic Test
2. Benzidine Test
3. Paper Strips
Causes
Diffuse Renal Lesions
Nitrite/Bacteria
Procedure
Clinical Implications
Rapid Diagnostics
MULTIPLE® REAGENT STRIPS FOR URINALYSIS
Summary and Explanation/Intended Use
Chemical Principles of the Procedure
Glucose
Bilirubin
Ketone
Specific Gravity
Blood
pH
Protein
Urobilinogen
Reagents
Glucose
Bilirubin
Ketone
Specific Gravity
Blood
pH
Protein
Urobilinogen
Warning and Precautions
Storage
Recommended Procedures for Handling Bayer Reagent Strips
Important
Specimen Collection and Preparation
Procedure
Quality Control
Results
Limitations of Procedures
Glucose
Bilirubin
Ketone
Specific Gravity
Blood
pH
Protein
Urobilinogen
Expected Values
Glucose
Bilirubin
Ketone
Specific Gravity
Blood
pH
Protein
Urobilinogen
Specific Performance Characteristics
Glucose
Bilirubin
Ketone
Specific Gravity
Blood
pH
Protein
Urobilinogen
Multistix® Urinalysis Strips (Fig. 5.3)
Dependable Results When and Where You Need Them
Easy to Use (Figs 5.4 to 5.6)
Multistix Configurations
Rapid Results (Fig. 5.6)
First Line Health Screen for a Variety of Settings
Improved Use of Resources
AUTOMATION IN URINALYSIS
Clinitek Status® Urine Analyser (Fig. 5.7)
Dependable Results in Any Patient Setting
A Wide Range of Test Parameters
Clinitek® 50 Urine Analyser (Fig. 5.11)
Dependable Results in Any Patient Setting
Easy to use
A Helping Hand
User Friendly
Rapid Results
Improved Use of Resources
Specifications
A Wide Range of Test Parameters
Clinitek® 500 Urinalysis Instrument
There's no Denying Easy Chemistry
Efficiency in Processing
User Friendly
Intelligent Data Management
A Wide Range of Test Parameters
SPECIAL URINE TESTS
Calcium in Urine (Sulkowitch Test)
Normal Values
Clinical Relevance
Increased Levels
Decreased Levels
Interfering Factors
Serotonin (5-Hydroxytryptamine)
Carcinoids
Test
Method
Clinical Relevance
Interfering Factors
False Positives
False Negatives
Cystine
Clinical Relevance
Values are increased in
Fat in Urine
Hereditary Metabolic Disorders
Errors of Carbohydrate Metabolism
Errors of Amino Acid Metabolism
Abnormal Porphyrin Metabolism
Ferric Chloride Testing
Uric Acid
Normal values
Clinical Relevance
Increased Levels (uricosuria)
Decreased Levels
Interfering Factors
Vanillylmandelic Acid (VMA)
Method/Principle
Clinical Relevance
Elevated VMA levels
Elevated catecholamines
Interfering Factors
Increased VMA levels are caused by
False decreased levels of VMA are caused by
Interfering Factors in Determining Catecholamine Levels
Be Careful
17-ketosteroids (17-KS)
17-Ketogenic Steroids (17-KGS)
17-Hydroxycorticosteroids (17-OHCS)
Normal Values
Method/Principle 17 KS
Method/Principle 17-OHCS
Clinical Relevance
Interfering Factors
Chlorides
Normal Values
Method
Clinical Relevance
Interfering Factors
Sodium
Normal Values
Method
Clinical Relevance
1. Increased Levels
2. Decreased levels of sodium associated with
3. Decreased levels
Interfering Factors
Potassium
Normal values
Method
Clinical Relevance
1. Increased Levels
2. Decreased Levels
3. Cautionary Finding
Interfering Factors
Follicle-Stimulating Hormone (FSH) Luteinising Hormone (LH)
Normal Values
Method
Clinical Relevance
Decreased FSH levels occur in
Increased FSH levels occur in
Pregnanediol
Normal Values
Method
Clinical Relevance
Increased levels
Decreased levels
Pregnanetriol
Normal Values
Method
Clinical Relevance
Oestrogen Fractions
Normal Values
Method
Clinical Relevance
1. Decreased Oestrogen values are seen with
2. Increased Oestrogen levels are found in
3. Decreasing Oestriol Levels
4. Miscellaneous causes of Oestriol levels decline are
Interfering Factors
Heavy Metals and Trace Elements Blood/ Urine
Description
Toxic/Poisoning Symptoms and Treatment
Symptoms
Treatment
Usage
MICROSCOPY OF THE URINARY SEDIMENT
Procedure
Interpretation
Red Blood Cells (Figs 5.16A and B)
Neutrophilic leucocytes (Pus cells) (Figs 5.17A and B)
Renal Tubular Epithelial Cells (Figs 5.18A and B)
Bladder Epithelial Cells (Figs 5.19A and B)
Squamous Epithelial Cells (Fig 5.20)
Casts (Fig. 5.21)
Hyaline (Fig. 5.22)
Finely Granular Casts
Coarse Granular Casts
Fatty Casts (Fig. 5.24)
Red Cell Casts (Fig. 5.25)
Blood Casts (Fig. 5.26)
Leucocyte Casts (Fig. 5.27)
Tubular Epithelial Casts (Fig. 5.28)
Waxy Casts (see Figs 5.21 and 5.23)
Detailed Study of Important Urinary Microscopy Constituents
Red Cells and Red Cell Casts
Clinical Relevance
Red Cell Casts
Red Blood Cells
Increased Red Cells are found in
Red cells in excess of WBCs imply bleeding into the urinary tract as may occur in:
Interfering Factors
White Cells and White Cell Casts
Normal Values
Clinical Relevance
Leucocytes
WBC Casts
Interfering Factors
Epithelial Cells and Epithelial Cell Casts
Normal Values
Clinical Relevance
Hyaline Casts
Normal Value
Clinical Relevance
Granular Casts
Normal Value
Clinical Relevance
Waxy Cysts
Oval Fat Bodies and Fatty Casts (Fig. 5.30)
Clinical Relevance
Crystals
Crystals Seen in Normal Acid Urine (Fig. 5.31)
Crystals Seen in Normal Alkaline Urine (Fig. 5.32)
Crystals seen in Abnormal Urine
Bacteria, Fungus and Parasites
Parasites and Parasitic Ova
Casts in Urine—Common Causes
Hyaline
COMMON PATTERNS OF ABNORMAL URINE COMPOSITION IN DISEASE
Red Cell
White Cell
Epithelial Cell
Granular
Waxy Casts
6:
Renal Function and Its Evaluation
RENAL PHYSIOLOGY IN BRIEF
FUNCTIONS OF THE KIDNEY
Urinalysis
Impaired Renal Function and Blood Chemistry
CONCENTRATION: DILUTION TESTS
Principle
Concentration Test
Dilution Test (Water Test)
Mosenthal Modification of Concentration— Dilution Tests
Results
Vasopressin Concentration Test
Conditions that Impair Concentrating Ability
PHENOL RED TEST [Phenolsulphonphthalein (PSP)]
Principle
Intravenous Method
Interpretation
Ureteral Catheterisation Method (Cystoscopy)
Phenol Red Test for Residual Urine
Interpretation
CLEARANCE TESTS
Creatinine Clearance
Methods
Interpretation
Creatinine Clearance Test
Normal Range
Effect of Age on Normal Function
Artefacts that Lower Calculated Figure
Causes for Reduced Creatinine Clearance
Chronic
PRINCIPLES OF PRECISE TESTS OF RENAL FUNCTION
Glomerular Filtration Rate (GFR)
Renal Plasma Flow (RPF)
Filtration Fraction
Renal Function Tests at a Glance
Maximal Tubular Capacity (Tm)
7:
Stool Examination
MICROSCOPIC EXAMINATION OF STOOL SPECIMENS
Having Described the Gross Appearance, Proceed on for Microscopic Examination for Cells and Parasites as follows
Use of Saline
Use of Iodine
Use of 1% Eosin
Use of Sargeaunt's Stain
Stool Concentration Methods
Concentration Methods may be Used
Flotation Concentration Methods
Zinc Sulphate Concentration Method
Reagents
Method
Sedimentation Concentration Methods
Simple Sedimentation Method
Formol-saline Ether Sedimentation Method
Reagents
Method
8:
Medical Parasitology
MEDICAL PARASITES
Importance of Morphologic Identification
INTESTINAL PROTOZOA OF MAN
Entamoeba histolytica
Morphology
Morphology (contd…)
Entamoeba histolytica (causing amoebiosis) Life Cycle
Pathogenesis
Pathology of Amoebiasis (Contd…)
The Intestinal Flagellates
Trichomonas Vaginalis
Intestinal Cilliate
Balantidium coli (causing balantidiasis)
The Nonpathogenic Intestinal Amoebae
MALARIAL PARASITES OF MAN
Morphology of Malarial Parasites Stained by Leishman of Giemsa
Morphology of Malarial Parasites Stages in Thin Films
Life Cycle of Malarial Parasites
The Pathogenesis of Malaria
Pathology of Malaria
1. Acute Phase
Pathology of Malaria
2. Chronic Phase
Pathology of Malaria
3. Complications and Sequelae
Pathology of Malaria
4. Blackwater Fever
Acute haemolytic attacks in MT malarias; associated with taking of quinine; numerous theories as to mechanism
BLOOD FLAGELLATES OF MAN
The Basis of Serum Biochemical Tests for Leishmaniasis
Leishmaniasis
Visceral Leishmaniasis (Kala Azar) Caused by Leishmania donavani
Cutaneous Leishmaniasis (Oriental Sore, Chiclero's disease, Uta, etc.) Caused by Leishmania tropica
Trypanosomiases: African type: Sleeping Sickness
African Trypanosomiases (Sleeping sickness) (Contd…)
Trpanosomiasis South American Type: Chaga's Disease
South American Trpanosomiasis (Chaga's Disease) (Contd…)
COMMON INTESTINAL ROUNDWORMS OF MAN–PATHOLOGY
EXTRAINTESTINAL ROUNDWORM INFECTION OF MAN-LARVAL WORM PATHOLOGY
Plasmid Nematodes (Contd…)
Hookworms
Enterobius Vermicularis (Thread, Pin or Seat Worm)
Syn. Oxyuris vermicularis
Enterobius vermicularis
Ascaris lumbricoides (The roundworm)
The Hookworms
TISSUE ROUNDWORMS OF MAN, CHIEFLY FILARIAE
Plasmid Nematodes (contd…)
The Filarial worms
Wuchereria bancrofti
Phasmid Nematodes (Filarial Worms) (contd…)
Dracunculus Medinensis (The Guinea Worm)
TAPEWORMS OF MAN
Cestoda
Cyclophyllidean Tapeworms of Man
Taenia solium (The Pork Tapeworm)
Taenia saginata (The Beef Tapeworm)
Echinococcus granulosus (Causing Hydatid Disease)
Dwarf Tapeworms Hymenolepsis nana
Hymenolepis diminuta
B. Occasionally infect man
Cestoda (General Morphology) (contd…)
FLUKES OF MAN
Fasciola Hepatica (The Sheep Liver Fluke)
Morphology of Adults and Larvae Cestoda (Contd…)
RECAPITULATION—PARASITOLOGY AT A GLANCE
The Amoebae of the Intestinal Canal
Recapitulation Protozoa inhibiting the intestine
The Body Fluid and Tissue Flagellates (Causing Leishmaniasis and Trypanosomiasis)
Laboratory Diagnosis of Malaria
Malaria Species Identification in the Mosquito—Pigment in Oocysts
Recapitulation Morphological Differentiation
Recapitulation
Neomatoda (Contd…)
Cestoda (Contd…)
Recapitulation Pathogenesis and Pathology of Worm Infections
Recapitulation (Contd…)
Recapitulation (Contd…) Local Effects of Worm Infections
Recapitulation Morphology of adults and larvae Nematodes
Recapitulation Ova
Recapitulation Ova of the less common or less important worms
LABORATORY EXAMINATION FOR PARASITES
Preservation and Shipment of Specimens to be Examined for Trophic and Encysted Protozoa
PVA (Polyvinyl Alcohol) Method of Brooke and Goldman
MIF (Merthiolate—Iodine-Formalin) Method of Sapero and Lawless
Routine Stool Examination and Concentration Methods have been Dealt with Elsewhere (Previous Chapter)
Negative Stain Direct Faecal Smear Examination
Kato Cellophane Thick Smear Technique (Kato and Miura, 1954)
Materials
Procedure
Heidenhain's Iron Haematoxylin Staining Method for Intestinal Protozoa
Staining Solutions
Procedure
Gomori's Trichrome Stain
Staining Solution
Procedure
Cultivation of Intestinal Protozoa
Urine
Sputum
Gastric Washings
Duodenal Aspirates
Spinal Fluid
Vaginal Secretions
Graham Cellulose Tape Technique for Diagnosis of Enterobiasis
Blood
Combined Thin and Thick Films
Making Films
Staining Films
Concentration of Microfilariae
Bone Marrow Smear
Serological Tests
Intradermal Tests
Casoni's Test
Muscle Biopsy for Trichinella spiralis
9:
Clinical Haematology
WAYS OF OBTAINING BLOOD
Capillary or Peripheral Blood
Venous Blood (Venipuncture)
Complications
Immediate
Late Local Complications
Late-general Complications
Clinical Alert
ANTICOAGULANTS
EDTA
Advantages of EDTA
Disadvantages of EDTA
Making EDTA Bulbs
Oxalates
Making Double Oxalate Bulbs
Trisodium Citrate
Heparin
Special Anticoagulants
Wherever Possible, the Necessary Tests, Investigations and Preparation of Blood Films should be done Immediately
Anticoagulated Blood Storage and Blood Cell Morphology
Peripheral Smears
EDTA Blood
Diagnostic Alerts
Blood Collection System
HAEMOGLOBIN (HB)
Haemoglobin Estimation: Sahli's Method: (Sahli's Haemoglobinometer) (Fig. 9.3)
Cyanmethaemoglobin Method
Drabkin's Reagent
Sheard-Sanford Oxyhaemoglobin Method
Other Methods
Alkali haematin Method
Gasometric Method
Specific Gravity Method
Chemical Methods
Sodium Lauryl Sulphate Method (Available from Coral Clinical Systems, Goa)
Normal Haemoglobin Values
ANAEMIA
Causes of Anaemia
1. Blood Loss
2. Impaired Red Cell Formation
3. Increased Destruction of Red Cell (Haemolytic) Anaemia
POLYCYTHEMIA
Causes
Primary
Secondary
1. Associated with hypoxia
2. Due to inappropriate erythropoietin increase in
3. Associated with adrenocortical steroids or Androgens
4. Associated with chronic chemical exposure
5. Relative
HAEMATOCRIT/PACKED CELL VOLUME (PCV)
Definition
Methods
Wintrobe's Tube
Microhaematocrit
Interpretation
BLOOD CELL COUNTS
WBC
Counting Chamber
Methods
Falsely high counts occur due to:
Falsely low counts occur due to:
Calculation
RBCs
Diluting Fluid
Method
Interpretation
Platelets
Method
Rees-Ecker Method for Platelet Count
Diluting Fluid
Procedure
Rough Estimation of Platelet Count from Stained thin Smear
Causes of Thrombocytopenia
Raised Platelet Count (Thrombocytosis)
ERYTHROCYTE INDICES
1. The mean cell volume (MCV)
2. The mean cell haemoglobin (MCH)
3. The mean cell haemoglobin concentration (MCHC)
COMPLETE BLOOD COUNT (CBC), BLOOD
Normal Values
Complete Blood Count (CBC)
ERYTHROCYTE SEDIMENTATION RATE (ESR)
Methods
Westergren's Method
Normal Values
Wintrobe's Method
Normal Values
Microsedimentation (Landau) Method
Materials Required
Procedure
Normal Values
Zeta Sedimentation Rate (ZSR)
Sources of Error for any ESR method
Interpretation of ESR
Rapid ESR is Found in
Slow ESR is usually seen in
Factors that Play a role in ESR
1. Plasma Factors
2. Red Cell Factors
3. Anticoagulants
Stages in ESR
Interfering Factors
BLOOD FILM EXAMINATION
Preparation of a Thin Blood Film
Making of Spreaders (Fig. 9.9)
Making Thick Smears
Fixing of Blood Films
Staining of Blood Films
Buffer Solution used in the Laboratory
Stain Preparation and Staining
Wright‘s Stain
Method
Leishman's Stain
Method
Giemsa's Stain
Method
Staining of Thick Films
Field's Stain
Field's stain A
Field's stain B
Method
Simeon's Modification of Boye's and Sterenal's Method
Method for Staining Thin Films
Procedure for Staining Thick Smears
Mounting and Preservation of Films
RAPID DIAGNOSTICS
Automation in Haematology
Coulter Principle
The Basics of Hematology Analyzers in a Nutshell
Coulter¨ MAXM and MAXM AL Hematology Flow Cytometry Systems (Fig. 9.11)
Instrument Specifications
20 Parameters
Throughput
Sample Requirements
Patient Result Storage
Bar Code Symbology
0-24 Hour Sample Stability
High Efficiency through Comprehensive Flagging
Beckman Coulter ACT Diff 10 Hematology Analyzer
Methods and Technologies
Parameters
Sample Analysis Characteristics
Throughtput
Carryover
Beckman Coulter ACT Hematology Analyzer (Fig. 9.12)
Printers
User Interface
Host Communication
Dimensions/Weight
Power/Input
Linearity
Background Counts
Precision
Beckman Coulter AcT 5 Diff Hematology Analyzer
Easy-to-Use, Safe Solution
Easy to Operate
Easy-to-Use Data Management (Fig. 9.15)
Easy on Your Budget
Methods and Technologies
Parameters
Sample Handling
Throughtput
Dimensions/Weight
Sample Stability
Operating Temperature
Accuracy
Positive ID
Precision
K-1000 Expandable 8-Parameter (Automated Hematology Analyzer) (Fig. 9.16)
Cell-Dyn 1600 and 1600cs (Fig. 9.20)
Features of the Systems include
Advia 120 Hematology Analyzer (Fig. 9.25)
Makes the difference
Knows anemia
Exceeds your expectations
Performance Specifications
Parameters
Differential Results
Morphology results (User definable)
Test Selectivity/Throughput
Physical Specifications
Sample Modes / Volumes
Weight and Dimensions
DEVELOPMENT OF BLOOD CELLS SITES OF BLOOD FORMATION
Normal Sites
Abnormal Sites
Development of Blood Cells (Chart 9.1)
Erythropoiesis (Fig. 9.29)
Leucopoiesis (Fig. 9.30)
The Myeloid Series
Development of a Mature Neutrophil
Lymphocytic Series (Fig. 9.31)
Monocytic Series (Fig. 9.30)
Thrombopoiesis (Fig. 9.30)
Examination of A Blood Film
Method
Always Note
RBCs
WBCs
Platelets
Differential Leucocyte Count (DLC)
Bone Marrow Examination
Bone Marrow Examination and Reporting
Marrow Film Preparation
Imprints
Crush Preparation
Examination
Note the undermentioned points:
Bone Marrow Aspiration Analysis
Normal Values
Differential Cell Count
Indications for Bone Marrow Aspiration
Absolute Indications
Diagnostic Importance
Confirmatory Importance
Therapeutic Importance
Contraindications
Morphological Types of Red Blood Cells (Fig. 9.33)
RBC Morphology, Blood
Normal Values
Classification of Variation from Normal
Usage
Reticulocyte Count
Red Blood Cell Abnormalities seen on stained Smear (In brief)
Normal Values
Staining
Stain
Method
Red Cell Fragility Test
Quantitative Test
Reagents
Method
Factors Affecting Osmotic Fragility Tests
Interpretation
Clinical Implications
Qualitative Assessment of G6PD Deficiency
Methaemoglobin Reduction Test
Reagents
Method
Interpretation
COMMERCIALLY AVAILABLE KIT FOR G6PD ASSESSMENT (QUALITATIVE) Courtesy: Tulip Group of Companies
Summary
Reagents
Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required
Screening Test Procedure
Quantitative Procedure
Interpretation of Results
Screening Test
Quantitative Test
Remarks
Clinical Implications
QUANTITATIVE ESTIMATION OF G6PD Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Notes
Examination of Foetal Haemoglobin
Qualitative Method
Interpretation
Quantitative Method
STEP A
STEP B
Normal Values
Tests for Sickling
Methods
Moist Cover Slip Preparation
Daland and Da Silva method
Reagents
Method
Dithionite Tube Test
Reagents
Working Solution
Method
Interpretation
Urea-dithionite Test
Reagents
Method
Interpretation
Refer to Table given under HbF Estimation for Percentage of HbS in Various Disorders
COMMERCIALLY AVAILABLE KIT Courtesy: Tulip Group of Companies
Summary
Reagents
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Materials Provided with the Kit
Reagent Pack
Additional Material Required
Test Procedure
Screening Method
Differentiation Method
Interpretation of Results
Screening Method
Differentiation Method
Remarks
LABORATORY DIAGNOSIS OF DISORDERS RELATED TO RBCs
Laboratory Diagnosis of Iron Deficiency Anaemia
Peripheral Blood
Peripheral Smear
Bone Marrow
Serum Biochemistry
Normal Values for Iron Metabolism
Laboratory Findings in Iron Deficiency
Blood Count
Bone Marrow
Others
Causes of Iron Deficiency Anaemia
Blood Loss
Other Causes of Chronic Blood Loss
Increased Requirements
Impaired Absorption
Inadequate Intake
Laboratory Diagnosis of Megaloblastic Macrocytic Anaemias
Peripheral Blood Findings in Vitamin B12 or Folic Acid Deficiency
Bone Marrow
Dyserythropoiesis
WBC Series
Megakaryocytes
Special Tests for Diagnosing Vitamin B12 Deficiency
Serum Vitamin B12 Assay
a. Microbiological
b. Radiosotope Assay
Radioactive Vitamin B12 Absorption Test
Schilling Test
Variant of Schilling test
Causes of Vitamin B12 Deficiency
Special Tests for Diagnosing Folate Deficiency
Serum Folate Assays
FIGLU Test
Radioactive Folic Acid Test-Like Schilling Test
Causes of Folic Acid Deficiency
Nutritional
Malabsorption
Increased Demand
Laboratory Findings in Megaloblastic Anaemias
Blood Counts
Bone Marrow
Blood Chemistry
Other Studies
Causes of Bone Marrow Megaloblastosis
Laboratory Diagnosis of Haemolytic Anaemias
Causes and Classification of Haemolytic Anaemias
Intracorpuscular Defects
Extracorpuscular Defects
Evidences of Haemolysis
Increased Breakdown of Haemoglobin
Compensatory Erythroid Hyperplasia
Damage to Red Cells
Demonstration of Shortened Lifespan of Red Cells
Laboratory Diagnosis of Hereditary Spherocytosis
Blood Picture
Peripheral Smear
Chemistry
Laboratory Diagnosis of Hereditary Elliptocytosis
Laboratory Diagnosis of Enzyme Deficiency Related Anaemias
G6PD Deficiency
Blood Picture
Laboratory Diagnosis of Autoimmune Haemylotic Anaemia (AIHA)
Laboratory Diagnosis of Warm Antibody AIHA
Blood Picture
Immunology
Laboratory Diagnosis of Cold Antibody AIHA
CHAD
PCH
Laboratory Diagnosis of Paroxysmal Nocturnal Hemoglobinuria
Blood Picture
Further Investigations
Laboratory Diagnosis of Lead Poisoning
Blood Picture
Bone Marrow
Urine
Laboratory Diagnosis of Haemoglobin Structure and Synthesis Disorders
Special Tests
Tests Depending on Physicochemical Properties
Haemoglobin Electrophoresis
Autoscanning and Computing Densitometer 205
Features
Minimum System Configuration
System Configuration with ‘PC-:LINK 205’ Software
Technical Specifications
Optical
Mechanical
Electronics
Computing and Editing
Printed Records
Power
Optional Accessories
Laboratory Diagnosis of Sickle Cells Trait
Laboratory Diagnosis of Sickle Cell Anaemia
Blood Picture
Laboratory Diagnosis of Unstable Hb Haemoglobinopathy
Blood Picture
Special Tests
Thalassaemias (Reduced Synthesis Rate)
In α Thalassaemia
In α Thalassaemia
Laboratory Diagnosis of β Thalassaemia Minor
Blood Picture
Peripheral Smear Shows
Hb Electrophoresis
Laboratory Diagnosis of β Thalassaemia Major
Blood Picture
Bone Marrow
Hb Pattern on Electrophoresis
Laboratory Diagnosis of α Thalassaemia
Hb-H Disease
Blood Picture
Hb Pattern (electrophoresis)
Demonstration of HbH inclusions
Haemoglobin Electrophoresis
Hb Bart's—Hydrops Foetalis
Blood Picture
Hb pattern
Laboratory Diagnosis of Aplastic Anaemia
Blood Picture
Classification and Causes of Aplastic Anaemia
Primary type is less common
Drugs
Bone marrow depression depends upon:
Drugs which Regularly Cause Aplastic Anaemia
Drugs which Occasionally Cause Bone Marrow Depression
Chemicals
Physical Agents
Pancytopenia
Blood Picture
Causes
NORMAL WHITE CELL VALUES AND PHYSIOLOGICAL VARIATIONS
Pathological Variations in White Cell Counts Neutrophilia
Metabolic Disorders—due to Varied Causes Leading to
Neoplasms
Conditions Causing Cell Necrosis or Destruction
Various Drugs/Chemicals Implicated are
Trauma and Haemorrhage
Cardiac Disorders
Collagen Diseases
Miscellaneous
Eosinophilia
Allergic States
Parasitic Diseases
Drug Administration
Neoplasms
Miscellaneous
Lymphocytosis
Acute Infections
Chronic Infections
Endocrine Disorders
Neoplasms
Monocytosis
Infections
Neoplasms
Collagen diseases
Miscellaneous
Basophilia
Morphologic Forms of Lymphocytes
Virocyte
Transformed Lymphocytes
Arneth Count
Arneth Index
Neutropenia and Agranulocytosis
Lymphopenia
Eosinopenia
Drug/hormone therapy
Response to Stress
Endocrine Diseases
Miscellaneous
Basophilopenia
Leukaemoid Reactions
Neutrophilic
Lymphocytic
Eosinophilic
Bone Marrow Plasmacytosis
Acute Infections
Chronic Infections
Allergic States
Collagen—Vascular Disorders
Neoplasms
Others
WHITE BLOOD CELLS
Neutropenia and Agranulocytosis
Blood Picture of Drug-Induced Neutropenia
Bone Marrow
Causes of Neutropenia
Other Causes of Neutropenia
Laboratory Diagnosis of Infectious Mononucleosis
Blood Picture
Paul Bunnel Test for Heterophile Antibody
Lupus Erythematosus (LE) Cell/Phenomenon
Method
Classification of Acute Myelomonocytic Leukaemias
FAB Classification
Laboratory Diagnosis of Leukaemias
Cytochemical Methods for Staining Leucocytes
Neutrophil Alkaline Phosphatase (Kaplow's Method)
Reagents
Procedure
Peroxidase (Myeloperoxidase, Kaplow's Method)
Reagents
Procedure
Interpretation
Periodic Acid-Schiff (PAS) Reaction
Reagents
Procedure
Interpretation
Sudan Black B Stain (Sheehan and Storey)
Reagents
Working stain solution
Procedure
Interpretation
Nonspecific Esterase (Yam et al)
Reagents
Procedure
Interpretation
Acute Leukaemias, Laboratory Diagnosis
Routine Haematologic Investigations
Blood Film Examination
Differentiation of ALL from AML
Other Investigations
Chronic Myeloid Leukaemia
Laboratory Investigations
Diagnostic Features
Additional Features
Chronic Lymphocytic Leukaemia (CLL)
Laboratory Findings
Paraproteinaemias
Causes
Multiple Myeloma
Laboratory Diagnosis
Other Laboratory Findings
Polycythaemia Vera
Laboratory Diagnosis
Myelosclerosis
Laboratory Diagnosis
Hodgkin's Disease
Laboratory Findings in Hodgkin's Disease
Early in Course
Later in Disease
QUALITY CONTROL IN HAEMATOLOGY
Internal Quality Control
Testing Control Sample
Control Chart (Levy-Jennings or L-J Chart
Cusum Analysis
Duplicate Tests
Inbuilt Quality Control
B. External Quality Assessment
C. Standardization
D. Proficiency Surveillance
10:
Clinical Haematology Bleeding Disorders
PLATELETS, COAGULATION AND BLEEDING DISORDERS: LABORATORY INVESTIGATIONS
Platelet Count—Dealt in depth elsewhere
Capillary Fragility Test of Hess
(Rumpel-Leede Sign, Tourniquet Test)
Clinical Implications
Laboratory Diagnosis of Vascular Bleeding Disorders
Interfering Factors
LABORATORY DIAGNOSIS OF PLATELET DISORDERS
Idiopathic Thrombocytopenic Purpura (ITP)
Drug Induced Immune Thrombocytopenia
Disseminated Intravascular Coagulation (DIC)
Causes of DIC
Functional Platelet Disorders
Laboratory Diagnosis
Hereditary Disorders
Acquired Disorders
Bleeding Time
Duke's Method
Requirements
Method
Normal Values
Precautions
Ivys's Method
Method
Normal Values
Interpretation
Clinical Implications
Interfering Factors
Patient Preparation
Coagulation Time
Capillary Tube Method of Wright
Lee and White's Method
Requirements
Method
Normal Values
Precautions and Errors
Clinical Implications
Interfering Factors
Clot Retraction
Principle
Requirements
Method
Interpretation
Errors
Heparin Therapy
Protocols and Blood Coagulation tests
QUALITY ASSURANCE FOR ROUTINE HAEMOSTASIS LABORATORY
Introduction
Preparation of Patients
Sample Collection Techniques (Phlebotomy)
Sample Preparation
Sample Processing and Storage
BUFFERED 3.2% CITRATE SOLUTION (Profact) Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Material Required But Not Provided
Sample Collection and Preparation
For Coagulation Assays
For ESR by Westergren Method
Precautions
Remarks
Calibration of Instruments/Equipments
Storage of Reagents
End Point Reading
Drug/Clinical Conditions Influencing Patient Results
PT Tests are Influenced on Administration of Following Drugs
APTT Tests are Influenced on Administration of Following Drugs
Thrombin Time Test is Prolonged in the Following Clinical Conditions
Clinical Conditions
MNPT and INR
Quality Control Aspects
(PROTHROMBIN TIME) (Quick One-stage Method) Liquiplastin® (Coutesy: Tulip Group of Companies)
Thromboplastin Reagent for Prothrombin Time (PT) Determination
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation of PPP
Additional Material Required for Manual and Calibration Curve Methods
Test Procedure
Manual Method
Calculation of Results
Manual Method
Expected Values
Remarks
SENSITIVE THROMBOPLASTIN REAGENT FOR PROTHROMBIN TIME (PT) DETERMINATION (ISI=1.0) Uniplastin® (Courtesy: Tulip Group of Companies)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Additional Material Required
Sample Collection and Preparation of PPP
Test Procedure
Manual Method
Calculation of Results
Manual Method
Expected Values
Remarks
THROMBOPLASTIN REAGENT FOR PROTHROMBIN TIME (PT) DETERMINATION, LYOPLASTIN® (Lyophilised reagent, ISI=1.0) (Courtesy: Tulip Group of Companies)
Summary
Reagent
Storage and Stability
Principle
Note
Additional Material Required
Reagent Preparation
Sample Collection and Preparation of PPP
Test Procedure
Manual Method
Calculation of Results
Manual Method
Expected Values
Remarks
Clinical Implications
Interfering Factors
Clinical Alert
MONITORING ORAL ANTICOAGULANT THERAPY
Introduction
Relevance and Use of the Prothrombin Time Test
Oral Anticoagulant Agents
Pharmacology of Oral Anticoagulants
PIVKA's
The Role of PT Test in Monitoring Effects of Oral Anticoagulant Therapy
Problems in monitoring Oral Anticoagulant Therapy
Factors Influencing Anticoagulant Effects of Warfarin
PT Ratio (PTR)
Percent Activity
Standardization of Prothrombin Time Reagents and Reporting System
Basis of Calibration
The INR Method of Reporting Results
INR Conversion Table
Recommended Therapeutic Ranges for Oral Anticoagulant Therapy
Other Factors Influencing The INR
MNPT
ISI value of PT used and Method of Clot Detection
Practical Considerations for Warfarin Therapy
Considerations for Frequency of Laboratory Tests for Monitoring Oral Anticoagulant Therapy
Management of Patients with High INR Values with or without Bleeding Complications
Advantages of the INR system
Disadvantages of the INR System
Patient Variables in PT/INR Testing
Factors that Influence Coagulation Test Results
Age and Gender
Blood Type
Within Day Variation
Seasonal Variation
Intraindividual Variability
Diet, Alcohol and Smoking
Medications
Menstrual Cycle, Pregnancy
Diseases
Physical and Emotional Stress
Posture
Venous Occlusion
Vitamin K
Anticoagulant Therapy
Prothrombin Determination (Two stage method)
Principle
Results
APTT/PTTK CEPHALOPLASTIN REAGENT FOR PARTIAL THROMBOPLASTIN TIME (APTT) DETERMINATION USING ELLAGIC ACID AS ACTIVATOR Liquicecin-E® (Courtesy: Tulip Group of Companies)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
FNP Collection
Additional Material Required
Test Procedure
Manual Method
Calculation and Reporting of Results
Manual Method
Calibration Curve Method
Expected Values
Remarks
SOYABEAN CEPHALOPLASTIN REAGENT FOR PARTIAL THROMBOPLASTIN TIME (APTT) DETERMINATION USING ELLAGIC ACID, AS AN ACTIVATOR Celin-se® (Courtesy: Tulip Group of Companies)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
FNP Collection
Additional Material Required
Test Procedure
Manual Method
Calculation and Reporting of Results
Manual Method
Calibration Curve Method
Expected Values
Remarks
Recalcification solution
Clinical Implications of APTT
Causes of Prolonged APTT
Shortened APTT occurs in
Circulating Anticoagulants
NORMAL AND ABNORMAL CONTROL PLASMAS FOR COAGULATION ASSAYS Plasmatrol H-I/II® (Courtesy: Tulip Group of Companies)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Preparation of the Reagent
Test Procedure
Expected Values
Remarks
FIBROSCREEN THROMBIN TIME TEST FOR QUALITATIVE ESTIMATION OF FIBRINOGEN Fibroscreen® Courtesy: Tulip Group of Companies
Summary
Reagent
Storage and Stability
Principle
Note
Quality Control
Sample Collection and Preparation
Additional Material Required
Procedure
Manual Method
Interpretation of Results
Expected Values
Interpretation of first line tests:
Remarks
FIBRINOGEN ESTIMATION-QUANTITATIVE Fibroquant, Reagent for Quantitative Estimation Of Fibrinogen (Courtesy: Tulip Group of Companies)
Summary
Reagent
Storage and Stability
Principle
Note
Quality Control
Sample Collection and Preparation
Additional Material Required
Procedure
A. Procedure for fibrinogen Calibration Curve Preparation
B. Test Procedure for Sample
Remarks
Fibrinolytic Activity
Euglobulin Lysis Time
Principle
Requirements
Method
Result
DILUTE BLOOD CLOT LYSIS TIME
Principle
Requirements
Method
Result
FDPs A Qualitative and Semiquantitative Latex Slide Test for Detecting Cross Linked Fibrin Degradation Products in Human Plasma X-L FDP Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
KIT Composition
Additional Material Required
Test Procedure
Qualitative Method
Semi-quantitative Method
Interpretation of Results
Qualitative Method
Semi-quantitative Method
Remarks
Screening Tests for Diagnosis of Procoagulant Deficiency
Requirements
Method
Results
LABORATORY DIAGNOSIS OF COAGULATION DISORDERS
Laboratory Diagnosis of Hemophilia
Christmas Disease (Hemophilia B)
von Willebrand's Disease
Hemorrhagic Disease of Newborn
LUPUS ANTICOAGULANTS: BASIC CONCEPTS AND LABORATORY DIAGNOSIS
General Background
Anti-Phospholipid Antibody-Lupus Anticoagulants
APS (Anti-Phospholipid Syndrome)
Clinical Findings with LA
Pathophysiological Mechanism of Thrombosis
Lupus Anticoagulants and Bleeding Complications
Phospholipid Dependence of Lupus Anticoagulants
Laboratory Diagnosis of Lupus Anticoagulants
Immunological Assays
Clot-based Assays
APTT (Activated Partial Thromboplastin Time)
TTI (Tissue Thromboplastin Inhibition Test)
KCT (Kaolin Clotting Time)
PNP (Platelet Neutralization Procedure)
Hexagonal Phase Phospholipids
Recommendations and Criteria for the Diagnosis of Lupus Anticoagulants
Current Recommendations of the ISTH
Scientific Subcommittee Criteria for the Laboratory Diagnosis of Lupus Anticoagulants
dRVVT: The test of choice for screening and confirmation of LA
Principle of dRVVT for LA detection
Interpretation of results with dRVVT test
dRVVT as positive predictor of thrombotic events in APS
Therapeutic Measures for Patients with LA
Management of patients with primary ‘APS’
Management of Patients with Secondary ‘APS’
dRVVT for Screening and Confirmation of Lupus Anticoagulants LADS (Courtesy: Tulip Group of Companies)
Summary
Principle
Reagents Provided with the Kit
Note
Storage and Stability
Additional Material Required
Reagent Preparation
Sample Preparation
Test Procedure
Interpretation of Results
Remarks
LA REFERENCE PLASMA FOR LA TEST (Courtesy: Tulip Group of Companies)
Summary
Reagent
Principle
Reagent Storage and Stability
Note
Preparation of the Reagent
Test Procedure
Remarks
AUTOMATION IN COAGULATION ANALYSIS
Hemostar
Technical Features
Hemostar XF
Technical Features
CoaLAB 6000
Compact
Versatile
User Friendly
Technical Specifications
TROUBLESHOOTING
General Instructions for Coagulation Test
Sample Collection Techniques
Sample Preparation
Sample Processing and Storage
Calibration of Instruments/Equipments
Storage and Procedure
Critical Requirement of MNPT in the Derivation of INR
ISI value of PT used and Method of Clot Detection
INR System
Prothrombin Time
Uniplastin®/Liquiplastin®/Lyoplastin®
Problem: Prolonged Clotting Time
Problem: Shortened Clotting Time
DPTT/PTTK
Liquicelin-E®/Celin-SE®
Problem: Prolonged Clotting Time
Problem: Shortened Clotting Time
Fibrinogen Estimation
Fibroscreen®/Fibroquant®
Problem: Prolonged Clotting Time
Problem: Shortened Clotting Time
Fibrinogen Degradation Products (D-Dimer) Estimation
XL-FDP®
Problem: False Positive Results
Problem: Delayed Agglutination
Problem: False Negative Results
Problem: Positive Control Giving Negative Reaction
11:
Blood Banking (Immunohaematology)
BLOOD GROUP ANTIBODIES
Naturally Occurring Antibodies
Genetics of ABO System
Biochemistry
Subgroups of A and AB
Subgroups of B
Antibodies of ABO System
Anti-H
ABO Testing Procedures
ABO Antibody Reagents
Red Cells Reagents
Group O reagent Screen Cells
Preparation of Red Cell Suspensions
Method (for 2% suspension)
Blood grouping sera should meet the following requirements
ANTI-A, ANTI-B, ANTI-A,B Blood Grouping Antisera for Slide and Tube Tests (From Tulip's Erybank Range)
Summary
Reagents
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Interpretation of Results
Slide and Tube Tests
Remarks
ANTI-A, ANTI-B, ANTI-A, B Monoclonal Blood Grouping Antibodies for Slide and Tube Tests (From Tulip's Eryclone Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Interpretation of Results
Slide and Tube Tests
Remarks
ANTI-A1 LECTIN Dolichos Biflorus Lectin for Slide and Tube Tests (From Tulip's Erybank Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Interpretation of Results
Slide and Tube Tests
Remarks
ANTI-H LECTIN Ulex Europaeus Lectin for Slide and Tube Tests (From Tulip's Erybank Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
For recognition of H antigen on human red blood cells
For Assessing Secretor Status in Human Saliva
Additional Material Required for Slide and Tube Tests
Procedure
Slide Test
Tube Test
Tube Test (Secretor Status)
Interpretation of Results
Slide and Tube Tests
Tube Test (Secretor Status)
Remarks
Other Requirements
PHYSIOLOGICAL SALINE SOLUTION FOR SEROLOGICAL APPLICATIONS (Sodium chloride 0.9% w/v) (From Tulip's Erybank Range)
Summary
Reagent
Principle
Note
Uses
BOVINE SERUM ALBUMIN 22% SOLUTION FOR SEROLOGICAL APPLICATIONS (From Tulip's Erybank Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Compatibility Testing
Broad-spectrum Compatibility Test
Major Cross match Procedure
Initial Phase
Incubation Phase
Antiglobulin Phase
Antibody Titration Test
Interpretation of Results
Compatibility Test
Antibody Titration Test
Remarks
CONCENTRATED ISO-OSMOTIC PHOSPHATE BUFFERED SALINE FOR SEROLOGICAL APPLICATIONS (Osmosol from Tulip)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Additional Material Required
Method of Preparation
Remarks
Media for Collection and Preservation of Reagent Red Cells
Precautions
RED CELL PRESERVING SOLUTION FOR SEROLOGICAL APPLICATIONS (Erywell from Tulip)
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Procedure
a. Quick method for whole blood preservation
b. Preparation of 2/3/5% stabilized Red Blood cell suspension in Erywell solution
Storage
Precautions
ABO GROUPING
Slide ABO Grouping Test
Six-tube Method (Fig. 11.3)
Interpretation
Briefly the reasons can be described as:
This leads to false negative results
This may cause false positive reaction
Solving Problems of Discrepancies
Repeat Preliminary Procedures
RH BLOOD GROUP SYSTEM
Clinical Importance of Rh
Present Status and Nomenclature
Rh Du Antigen
Rh Antibodies
Reagents for Rh(D) Grouping
Rh(D) Grouping Procedures
Slide Testing
Method
Tube Method
Interpretation
Testing for Du
Method
Interpretation
ANTI-D (Rho) Human (IgG) Polyclonal Blood Typing Antibodies for Slide and Modified Tube Tests (From Tulip's Erybank Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Du Test Procedure
Interpretation of Results
Slide and Tube Tests
Du Test Procedure
Remarks
ANTI-D (Rho) (IgM) Monoclonal Blood Typing Antibodies for Slide and Tube Tests (From Tulip's Eryclone Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Immediate Spin Tube Test
Du Test Procedure
Interpretation of Results
Slide and Tube tests
Du Test Procedure
Remarks
ANTI-D (Rho) (IgG) Monoclonal Blood Typing Antibodies for Slide and Modified Tube Tests (From Tulip's Eryclone Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Du Test Procedure
Interpretation of Results
Slide and Tube tests
Du Test Procedure
Remarks
ANTI-D (Rho) (IgM + IgG) Monoclonal Blood Typing Antibodies for Slide and Tube Tests (Rhofinal from Tulip)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required for Slide and Tube Tests
Test Procedure
Slide Test
Tube Test
Du Test procedure
Interpretation of Results
Slide and Tube Tests
Du Test Procedure
Remarks
Blood Group Testing in Microplates
Procedure
ANTIHUMAN GLOBULIN TEST
Historical Perspective
Preliminary Notes: Antigen and antibody related to blood group serology
Antibody Nomenclature with Respect to Blood Group Serology
IgM Class Antibodies
IgG Class Antibodies
Role of Enhancement Medium
Enhancement Techniques
Albumin Additives
Enzymes
Positively Charged Molecules
Polyethylene Glycol (PEG)
LISS (Low Ionic Salt Solution) and LISS additives
Complement
Immunoglobulin Requirements for Activation of Classical Pathway
Complement Binding Antibodies (Table 11.5)
Basic Concepts of Anti-human Globulin Testing
Anti-human Globulin Reagents
ICSH Recommendations for Polyspecific Anti-human Globulin Reagents
Monospecific Coomb's Reagent
Direct Anti-human Globulin Test (DAT)
Major Applications of DAT in Blood Group Serology
Haemolytic Disease of the Newborn (HDN)
Transfusion Reactions
Other Immune Haemolytic Diseases
Classification of Autoimmune Haemolytic Anaemia
Drug-induced Haemolytic Anaemia
Importance of Serological Studies in DAT Positive Results (Table 11.6)
Indirect Anti-human Globulin Test (IAT)
Applications of IAT
Probable Sources of Error in Anti-human Globulin Testing
False Negative Results
False Positive Results
Coomb's Control Cells/Complement Coated Cells
Indirect Anti-human Globulin Test for the Detection of Red Blood Cell Antibodies
Saline Phase Indirect Anti-human Globulin Test
Specimen
Reagents
Procedure
Albumin Phase Indirect Anti-human Globulin Test
Specimen
Reagents
Procedure
LISS Phase Indirect Anti-human Globulin Test
Specimen
Reagents
Procedure
PEG-enhanced Indirect Anti-human Globulin Test
Specimen
Reagents
Procedure
LIM (Low Ionic Medium-Polybrene) Indirect Anti-human Globulin Test
Specimen
Reagents
Procedure
Interpretation of Results for Anti-human Globulin Tests
Controls
Notes
Papain—One-stage Enzyme technique / Two-stage Enzyme Technique
Specimen
Reagent
Procedure for One-stage Enzyme Technique
Procedure for Two-stage Enzyme Technique
Antibody Titration Studies
Antibody Titration for Characterizing Type of Antibody in Serum
Specimen
Reagents
Procedure
Interpretation
Notes
Antibody Titration Studies for Early Detection of Haemolytic Disease of the Newborn
Specimen
Materials
Quality Control
Procedure
Results
Notes
Use of Sulfhydryl Reagents to Distinguish between IgM and IgG Antibodies
Specimen
Reagents
Procedure
Notes
Elution Techniques
Citric Acid Elution Method
Specimen
Reagents
Procedure
Notes
Cold Acid Elution
Specimen
Reagents
Procedure
Notes
Glycine-HCl/EDTA Elution
Specimen
Reagents
Procedure
Notes
Heat Elution
Specimen
Reagents
Procedure
Donath-Landsteiner Test
Specimen
Reagents
Procedure
Interpretation
Notes
Chequer Board Titration for Quality Control of Anti-IgG Potency in Polyspecific AHG Reagent and Evaluation of Complement Potency with Complement-coated Cells
Reagents and materials required for chequer board titration
Reagent Preparation Procedure
Dilutions of Anti-D (IgG) Reagent
Cell Sensitization
Note
Dilutions of Anti-human Globulin Reagent
Preparation of Complement-Coated Cells
Preparation of 50% Cell Suspension of O Group Red Blood Cells
Collection of inert O group serum
Sensitization of O group red blood cells
Chequer Board Titration (Table 11.9)
Preparation of Coomb's Control Cells
Procedure
ANTI-HUMAN IgG MONOSPECIFIC COOMB's REAGENT FOR DIRECT AND INDIRECT ANTIGLOBULIN TEST (From Tulip's Erybank Range)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
For Direct Antiglobulin Test
For Indirect Antiglobulin Test
Additional Material Required
For Direct Antiglobulin Test
For Indirect Antiglobulin Test
Procedure
Direct Antiglobulin Test
Indirect Antiglobulin Test for Antibody Identification
Interpretation of Results
Direct Antiglobulin Test
Indirect Antiglobulin Test
Remarks
ANTIHUMAN GLOBULIN REAGENT For Direct and Indirect Antiglobulin Tests (Eryclone® from Tulip)
Summary
Reagents
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
For Direct Antiglobulin Test
For Indirect Antiglobulin Test
Preparation of Coomb's Control Cells
Additional Material Required
Procedure
Direct Antiglobulin Test
Indirect Antiglobulin Test
Major Cross-match Procedure
Interpretation of Results
Direct Antiglobulin Phase
Indirect Antiglobulin Phase
Remarks
PREPARING COOMB'S CONTROL CELLS Agtrol® (From Tulip, Starter Pack)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Additional Collection and Storage
Procedure
Preparation and Validation of Coomb's Control Cells
Validation of prepared 5% Coomb's control cell suspension
Use of Coomb's Control cells
Validation of Anti-human Globulin Reagent
Confirmation of Negative Antiglobulin Test Reactions
Interpretation and Results
Remarks
LOW IONIC SALT SOLUTION FOR SEROLOGICAL APPLICATIONS (Tuliss from Tulip)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Additional Material Required
Procedure
Indirect Antiglobulin Test for Cross Match
Initial Phase
Incubation Phase
Antiglobulin Phase
For Antibody Detection
Initial Phase
Incubation Phase
Antiglobulin Phase
Interpretation of Results
Crossmatch
Antibody Detection
Remarks
STABILIZED, ACTIVATED PAPAIN ENZYME SOLUTION FOR SEROLOGICAL APPLICATIONS (Liquipap from Tulip)
Summary
Reagent
Reagent Storage
Principle
Note
Sample Collection and Preparation
Additional Material Required
Procedure
One-stage Test
A. For cross-match
B. For antibody detection
Two Stage Test
A. For Cross match
B. For antibody detection
Interpretation of Results
Remarks
BLOOD TRANSFUSION
Blood Donors
Donor Screening
Drawing of Blood
ADVERSE donor reactions
Problems with Blood Flow
Haematoma
Accidental Puncture of the Artery
Mild, Moderate or Severe Reactions
Mild Donor Reactions
Moderate Donor Reactions
Severe Donor Reactions
Hyperventilation
Accidents
Compatibility Testing
The Cross-Match
Saline Cross-Match
The Open Slide Method
Saline Tube Method
Immediate-spin and Thermal Incubation Modification
Method of Cross-Matching Universal Donor Blood
Factors Leading to False Results
If Still an Unexpected Incompatibility is Obtained
Choice of Material for Transfusion
Blood and Its Products
Fresh Blood
Packed Cells
Plasma
Blood Transfusion Complications
Complications Appearing Early
Complications Appearing Late
Investigations in a Case of Transfusion Reaction
Proceed as Mentioned Below
Interpretation of Results
Laboratory Diagnosis of Hemolytic Disease of the Newborn
TROUBLE SHOOTING
General Instructions for Blood Grouping
Sample Preparation
Sample Processing
Sample Storage
Equipments
Reagents
Common Causes of False-negative and False-positive Results in ABO Testing
False-negative Results
False-positive Results
Interpretation of Agglutination Reactions
ABO Grouping
Problem: False Positive Results
Problem: False Negative Results
Problem: Hemolysis or Red Blood Cells
Problem: Weak Agglutination
Problem: Mixed Field Agglutination in ABO Grouping or Discrepancy Observed Between the Red Cell Group and the Reverse Group
Problem: Delayed Agglutination
Rh Typing
Problem: False Positive Results
Problem: False Negative Results
Problem: Hemolysis of Red Blood Cells
Problem: Delayed or Weak Agglutination
General Instructions for Anti Human Globulin (Coombs Reagent)
Sources of Error in Antiglobulin Testing— Coombs Cells
False Negative Results
False-Positive Results
Anti Human Globulin (AHG or Coombs Reagent)
Problem: False Positive Results
Problem: False Negative Results
Anti-A1 Lectin
Problem: False Positive Results
Problem: Hemolysis of Red Blood Cells
Problem: False Negative Results
Anti-H Lectin
Problem: False Positive Results
Problem: Hemolysis of Red Blood Cells
Problem: False Negative Results
12:
Cerebrospinal and Other Body Fluids
CEREBROSPINAL FLUID
Normal Values for Lumbar CSF in Adults
Lumbar Puncture
Indications
Complications of Lumbar Puncture
CSF Rhinorrhoea and Otorrhoea
CSF Pressure
CSF
Gross Examination
Cell Counts
Diluting the Fluid
Count
Various Types of Cells in CSF
Mixed Reaction (Neutrophils, Lymphocytes and Monocytes) occurs in:
Monocytic and/or Lymphocytic Reaction is Seen in:
Globulin Test
Conditions that Elevate CSF Protein
Mild Elevation, to 300 mg%
Electrophoretic Evidence of IgG
Moderate or Pronounced Elevation
Protein Electrophoresis of CSF
Lange's Colloidal Gold Test
Colloidal gold test
Glucose
Conditions that Effect the CSF Glucose
No significant change
Moderate reduction
Marked reduction
Enzymes
LDH
SGOT
CPK
Bacteriologic Examination
Serologic Tests
SYNOVIAL FLUID (SF)
Clinical Indications for Aspiration Include
Viscosity
Mucin Clot Test (Ropes' Test)
Microscopic Examination
Immunologic Studies
PLEURAL FLUID
Abnormal Pleural Fluid Accumulation, or Pleural Effusion may be Caused by
Indications for Thoracentesis
Complications of Thoracentesis may include
Do not Remove More than 1 litre of Fluid at One Time
Gross Examination
Haemorrhagic Pleural Fluid can be found in
Haemothorax
Milky Fluid
True Chylothorax
Microscopic Examination
Sometimes lymphocytic effusion may be seen in
RA Cells
Eosinophilic pleural effusions may be seen in
Immature blood cells may be seen in
Chemical Examination
Microbiologic Examination
PERICARDIAL FLUID (PF)
Normal
Indications for Pericardial Fluid Aspiration
Complications of the (Blind) Pericardial Fluid Aspiration
Gross Examination
Increased amounts of normal-appearing pericardial fluid may be found in
Cloudy appearance may be associated with
Blood-tinged pericardial fluid is seen in
Grossly bloody fluid may be caused by
Milky pericardial fluid (unusual) may be due to
Microscopic Examination
Microbiologic Examination
Chemical Examination
PERITONEAL FLUID
Indications for Abdominal Paracentesis
Gross Examination
Colour of Peritoneal Fluid
Similar appearance in
Turbid fluid suggests peritonitis due to
Blood-tinged or Grossly Bloody Fluid may be seen in
Greenish in
Milky Fluid is Due to Chylous Ascites, Various Causes are
Microscopic Examination
Microbiologic Examination
Chemical Examination
Ascitic transudate is seen in
Ascitic fluid LDH is raised in
Differential diagnosis of peritoneal transudate Vs. aspirated urine
AMNIOCENTESIS AND AMNIOTIC FLUID ANALYSIS, DIAGNOSTIC
Normal Value
Routine Analysis
Abnormalities that may be Found upon Routine Analysis
Description
Risks
Contraindications
Preparation
Procedure
Postprocedure Care
Patient and Family Teaching
Factors that Affect Results
Other Data
13:
Semen Analysis
SEMEN ANALYSIS
Semen Analysis
Why it is done?
How to Prepare?
How it is done?
How it Feels?
Risks
Results
What Affects the Test?
What to Think about?
Collection
Gross Examination
Physical Characteristics
Microscopic Examination
Sperm Counts
Safety Precautions
Sperm Counting Methods
Neubauer hemacytometer
Sperm Counting Methods
When Count are towards lower limit use the method given as under
Motility
Sperm Morphology (Fig. 13.1)
Chemical Examination of Semen
Reagent
Method
Reporting
Other Tests of Semen
Antibodies to Spermatozoa
14:
Sputum Examination
COMMON RESPIRATORY DISORDERS
Mycobacteria
Mycotic (Fungal) Disease
Pathological Fungi
Actinomyces israelii
Nocardia asteroides
Cryptococcus neoformans
Histoplasma capsulatum
Coccidiodes immitis
Blastomyces dermatidis
Candida albicans
Aspergillus fumigatus
Phycomycetes
Bronchial Asthma
Bronchiectasis
Chronic Bronchitis
Lung Abscess
Pneumonia
Pneumoconiosis
Pulmonary Embolism
Heart Disease
Viral Infections
Pulmonary Alveolar Proteinosis
Cytologic Examination in Malignancy
15:
Pregnancy Tests
BIOASSAYS
Historical Aspects
Aschheium and Zondek test (1928)
Friedman test (1931)
Bellerby test (1934)
Rat Ovarian Hyperaemia test of Frank and Berman
Tests Using Male Toad/Male Frog
Normal Values of hCG (Serum/Plasma)
Comments
IMMUNOLOGIC METHODS
Immunologic Tests for Pregnancy
SLIDE TEST FOR PREGNANCY (Foretel® from Tulip Group of Companies)
Latex Agglutination Inhibition Method
Summary
Reagents
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Qualitative Method
Semi-quantitative Method
Material Provided with the Kit
Reagent Pack
Accessories Pack
Additional Material Required
Test Procedure
Qualitative Method
Semi-quantitative Method
Interpretation of Results
Qualitative Method
Semi-quantitative Method
Remarks
SLIDE TEST FOR PREGNANCY (Foresight—from Tulip Group of Companies)
Direct Latax Agglutination Method
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Qualitative Method
Semi-quantitative Method
Material Provided with the Kit
Additional Material Required
Test Procedure
Qualitative Method
Semi-quantitative Method
Interpretation of Test Results
Qualitative Method
Semi-quantitative Method
Remarks
ELISA PREGNANCY TEST (Vectra from Tulip Group of Companies)
Introduction
Summary
Principle
Reagents and Material Supplied
Materials for Performing the Test
Additional Material Required
Storage and Stability
Note
Specimen Collection
Test Procedure
Interpretations of Results
Positive Results
Negative Results
Remarks
Perspectives on Membrane-Based Rapid Diagnostic Tests and Detection of hCG Using These tests
Index
What are the principles of membrane-based Rapid Diagnostic Tests?
What are the components of membrane-based Rapid Diagnostic Tests and how are they constructed?
What are the limitations and effects of various components on the performance of membrane-based Rapid Diagnostic Tests?
How does the nitrocellulose membrane affect the sensitivity of Rapid Diagnostic Tests?
Pore size and capture reagent binding properties
Pore size and lateral flow rate
Why are colloidal gold sol particles commonly employed in the detector reagent in membrane-based Rapid Diagnostic Tests?
Colloidal Gold Sol Particles as Indicator
Effect of Shape of Colloidal Gold Sol Particles on Stability
Effect of Shape of Colloidal Gold Sol Particles on Sensitivity
Effect of Size on Colour of Colloidal Gold Sol Particles
Why are variations in band appearance commonly observed in membrane-based Rapid Diagnostic Tests employed for antigen detection?
Variations in band appearance in different assays is due to use of varying avidity of the antibodies at the test/control band (Fig. 15.3B).
What is the role of sample pad in membrane-based Rapid Diagnostic Tests
What is the role of soak pad in membrane-based Rapid Diagnostic Tests?
Why do “Faint Ghost Bands” appear at the test region if the device is left out on the work-table?
Result must be recorded at the end of the recommended reaction time for correct Interpretation.
How do we interpret “Broken Bands” at the test/control region?
However, appearance of even a broken and at the test region indicates positive results.
What is pregnancy testing?
What is human Chorionic Gonadotrophin (hCG)?
What are the levels of hCG observed during normal pregnancy?
What is the effect of antibody pair used in the membrane-based Rapid Diagnostic Pregnancy Tests for detection of hCG?
What is the clinical significance of hCG?
What are the implications of sensitivity and specificity on membrane-based Rapid Diagnostic Tests for Pregnancy?
What is the ideal specimen to be employed for pregnancy testing?
Why are discrepant results observed during problem pregnancies?
Ectopic Pregnancy
Spontaneous Abortions
Early Pregnancy Loss
Exogenous Administration of hCG
Trophoblastic tumors and non-trophoblastic tumors
Phantom hCG-like immuno-reactivity
After normal delivery
How do procedural errors affect Rapid Diagnostic Tests? Improper storage conditions
Procedural Errors
Dropper and Drop Size
Excess Sample Volume Dispensed
Damage in Packing
Reading Results at the Recommended Time
HUMAN CHORIONIC GONADOTROPIN AND ITS ESTIMATION IN A CLINICAL LABORATORY
Biochemistry and Physiology
α-Subunit and β-Subunit of hCG
Monoclonal Antibodies
hCG and its Forms
Clinical Applications of hCG Estimation
Physiological Properties of hCG
Objectives of hCG Estimation
Samples for Measurement of hCG
Strategies of hCG Assays
a. Calibrators
b. Check Cross Reactivity With LH
Assay Systems for hCG Estimation
a. Home Test Kits / Rapid Tests
b. Qualitative Laboratory Test Kits
c. Quantitative Laboratory Test Kits
DIPSTICK ICT PREGNANCY TEST (Clue From Orchid Biomedical Systems)
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure and Interpretation of Results
Limitation of the Test
Performance Characteristics
1. Sensitivity
2. Specificity
3. Accuracy
DEVICE ICT PREGNANCY TEST (Clue, from Orchid Biomedical Systems)
Introduction
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure and Interpretation of Results
Limitation of Tests
Performance Characteristics
1. Sensitivity
2. Specificity
3. Accuracy
ICT Techniques for Urine/Serum Sample
Advantages of Serum Testing
DIPSTICK ICT, URINE/SERUM PREGNANCY TEST (Gravi Check from Orchid Biomedical Systems)
Introduction
Summary
Gravi Check
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Urine as Sample
Serum as Sample
Test Procedure and Interpretation of Results
Limitations of the Test
Performance Characteristics
1. Sensitivity
2. Specificity
3. Accuracy
DEVICE ICT URINE/SERUM PREGNANCY TEST (Gravi Check from Orchid Biomedical Systems)
Introduction
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Urine as Sample
Serum as Sample
Test procedure and Interpretation of Results
Limitation of the Test
Performance Characteristics
1. Sensitivity
2. Specificity
Altered Laboratory Results In Normal Pregnancy
TROUBLESHOOTING
Latex Methods
Indirect/Latex Agglutination Inhibition Method
Foretel
Problem: False Positive Results
Problem: Delayed Agglutination
Problem: False Negative Results
Latex Agglutination/Direct Method
Foresight®
Problem: False Positive Results
Problem: False Negative Results
RAPID FORMATS
Device/Dipstick
Clue
Problem: False Positive Results
Problem: Delayed Positive Results
Problem: False Negative Results
Problem: Invalid Results
Gravicheck®
Problem: False Positive Results
Problem: Delayed Positive Results
Problem: False Negative Results
Problem: Invalid Results
16:
Examination of Gastrointestinal Contents
NORMAL SALIVA—CONSTITUENTS
Constituents
GASTRIC JUICE
Constituents
Digestive enzymes/factors
Normal Gastric Constituents in Infants and Children
Abnormal Gastric Constituents
Routine Gastric Juice Examination
Gross Examination
Chemical Examination
1. Blood
2. Qualitative test for free HCI (Topfer's test)
3. Titration for Acid
Method
Comments
Lactic acid (Kelling's Test)
Microscopic Examination
Gastric Test Meals
Procedures
Tubeless Gastric Analysis
Interpretation
Basal Gastric Secretion
Method
Interpretation
Augmented Histamine Test (AHT)
Method
Interpretation
Histamine Infusion Test
Advantages
Method
Interpretation
Histalog Test
Insulin Hypoglycaemia Test
Method
Interpretation
Gastrin Secretory Test
Miscellaneous Investigations
EXAMINATION OF DUODENAL CONTENTS
Duodenal Drainage
Indications
Method for Diagnostic Drainage
Examination for Diagnosis
Interpretation
COMPOSITION OF BILE
Gross and Chemical Characteristics
PANCREATIC FUNCTION TESTS
Composition of Pancreatic Juice
Gross and Chemical Characteristics of Pancreatic Juice
Digestive Enzymes
Proteolytic Enzymes
Peptidases
Nucleases
Amylolytic Enzymes
Lipolytic Enzymes
Acute Pancreatitis
Chronic Pancreatitis (Cirrhosis of Pancreas)
Carcinoma of Pancreas
Lipase
Principle (Lipase estimation in serum)
Interpretation
Secretin Test
Other Laboratory Tests in Acute Pancreatitis
Miscellaneous Tests for Chronic Pancreatitis
SWEAT ELECTROLYTES PILOCARPINE IONTOPHORESIS
Diagnostic Application of Sweat Testing
Normal values in children
17:
Diabetes Mellitus Laboratory Diagnosis
DIABETES MELLITUS
Classification and Causes of Diabetes
Primary
Miscellaneous
Screening Tests
Urine Glucose (Methods mentioned elsewhere)
Fasting Blood Sugar
Two-hour Postprandial Blood Glucose
Diagnosis and Classification of Diabetes Mellitus New Criteria
Previous Classification
Changes in the Classification System
New Diagnostic Criteria of Diabetes Mellitus
Glycated Hemoglobin
Impact of the New Diagnostic Criteria
Screening Recommendations
Final Comment
Conventional Diagnostic Tests
Oral Glucose Tolerance Test (OGTT)
Patient Preparation
Interpretation
1 Wilkerson point system
2. The Fajans-Conn criteria
3. The university group diabetes mellitus programme
Interfering Factors
I/V GTT
Rapid I/V GTT
Cortisone Glucose Tolerance Test
Parenteral Administration of Glucagon or Epinephrine
I/V Tolbutamide Test
I/V insulin tolerance test
Glycosylated Haemoglobin (HbA1c); Glyco-Haemoglobin (G-Hb); Diabetic Control Index
Kits available commercially
Increased
Decreased
Description
Factors that Affect Results
Other Data
Test Significance
Clinical Relevance
Interfering Factors
GLYCOSYLATED HEMOGLOBIN KIT (Ion Exchange Resin method) For the quantitative determination of Glycohemoglobin in Blood (For in vitro Diagnostic use only) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/Stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Notes
Insulin
Normal values
Test Significance
Clinical Relevance
Interfering Factors
C-Peptide
Normal Values
Test Significance
Clinical Relevance
Glucagon
Normal Values
Test Significance
Clinical Relevance
Interfering Factors
Other Important Tests in Diabetics
Hypoglycaemia
Causes of Hypoglycaemia
Spontaneous (fasting) Hypoglycaemia
Induced Hypoglycaemia
RAPID DIAGNOSTICS
Accu-Chek® Courtesy: Roche Diagnostics
Accu-Chek Active System: Virtually Painfree Testing in 5 Seconds
Accu-Chek Softclix (Fig. 17.1)
Accu-Chek Active Meter
Active Glucose Test Strips
Running a Quality Control Test
Cleaning the Meter
Storing the Meter
Light Conditions
Atmospheric Humidity
Sources of Interference
DCA 2000 Plus Analyzer (Fig. 17.11)
Accuracy, Precision, and Reproducibility with the Convenience of In-office Results
Easy Procedure
DCA 2000 Plus Analyzer
Intensive Management Improves Glycemic Control
Reduce the risk. Monitor HbA1c levels
Laboratory-accurate Results just minutes after testing
HbA1c results… in minutes
Microalbumin/creatinine ratio…in minutes
Detect Early Stages of Diabetic Nephropathy. Protect your Patient from Complications
Specifications
Size
Weight
Power
Ambient Operating Temperature Range
Ambient Operating Humidity Range
18:
Liver Function Tests
TESTS OF EXCRETION BY THE LIVER
Bile Pigment
Types of Bilirubin
Classification of the Causes of Jaundice
Unconjugated Bilirubin
NORMAL
HEPATITIS
OBSTRUCTION
Hepatic (Fig. 18.3)
Conjugated Bilirubin
Intrahepatic Cholestasis (regurgitation jaundice)
Hyperbilirubinemia
Urine Urobilinogen
Urine Urobilinogen Absent
Faecal Urobilinogen
Bromsulphalein (Sulphobromophthalein) Excretion Test
Method
Conditions Associated with Increased BSP Retention
Hepatobiliary System
Extrahepatic Conditions
Artefacts
EVALUATION OF SYNTHESIS IN LIVER
Serum Proteins (albumin especially)
Prothrombin Concentration
Low Prothrombin in Presence of Jaundice
Low Prothrombin in the Absence of Jaundice
Cholesterol and its Esters
Decrease of Both Substances
Increase of Total but Decrease of Esters
Detoxification
Hippuric Acid Test
EVALUATION OF ENZYME ACTIVITY
Serum Transaminases
Serum Protein changes in Selected Diseases
Serum Alkaline Phosphatase
SUGGESTED LIVER FUNCTION TESTS
A. Jaundice Absent
B. Jaundice Present
C. Possible Metastatic Cancer
Liver Battery (Profile), Serum
Normal Values are Dependent Upon Methods/Kits/Manufacturers
Normal Values
Usage
Increased
Decreased
Description
19:
Clinical Chemistry
COLORIMETRY
Beer's Law
Lambert's Law
Calculation of Absorbance (A)
Amount Transmission (%T)
Optical Density (OD)
PHOTOMETER
A. Light Source
B. Wavelength Selectors
C. Cuvettes and flow-through cells
D. Photoelectric cell
E. Galvanometer
Requirements of Colorimetric Analysis
1. Test solution
2. Standard solution
3. Blank solution
Sources of Error in Photometry
Inherent Properties of the Solution
a. Chemical Nature of the Solvent and Solution
b. Exposure to Light
c. Colour Instability
d. Foreign Matter and Air Bubbles
e. Errors of Weighing and Dilution
Instrument
a. Light Source
b. Stray Light
c. Slit Width
d. Moisture
e. Linearity of Photocell Response
f. Cuvettes
g. Wavelength Calibration
Operator Errors
CLINICAL CHEMISTRY
Specimen Collection and Processing
Proper Specimen Collection
Specimen Collection
Chemistry (plain tube)
Chemistry (Heparin)
Chemistry
Haematology (EDTA)
Haematology (EDTA)
Haematology (plain tube)
Haematology (Sodium citrate)
Blood bank (plain tube)
Serology (plain tube)
Processing
Centrifuge
Difficulties
Blood Collection, Precautions and Errors
Clinical Chemistry and Drug Interference (See Appendix II)
Pharmacologic Interference
Chemical interference
Control Sera from Boehringer
Control Sera
Normal Values Differ with Different Kits and Manufactures. Always Consult the Product Insert for Exact Method for a Particular Kit, Follow the Manufacturer's Instructions Strictly
BLOOD UREA NITROGEN (BUN)
Normal Values
UREA (DAM method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
UREA (Mod. Berthelot Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
UREA (GLDH Kinetic method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Substrate Start Assay
Sample Start Assay
Calculations
Linearity
Note
Normal Values (general reference)
Clinical Relevance
Common Causes of Increased BUN or Uremia
Prerenal
Renal
Post-renal
Decreased BUN is associated with
Interfering Factors
Comments
PLASMA OR SERUM CREATININE
Normal Values
Creatinine (Alkaline Picrate method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Reference Values
Storage/stability
Reagent Preparation
Sample Material
Serum or Urine
Procedure
Deproteinization of specimen
Colour development
Calculations
Linearity
Note
Creatinine (Mod Jaffa's Kinetic method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Reference Values
Storage/stability
Reagent Preparation
Sample Material
Serum or Urine
Procedure
Calculations
Linearity
Note
Clinical Relevance
Causes of Raised Serum Creatinine Levels
Decreased Creatinine levels occur in
Interfering Factors
SERUM BILIRUBIN
Normal Values
Bilirubin (Mod Jendrassik and Grof's Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/Stability
Reagent Preparation
Sample Material
Procedure
Direct Bilirubin Assay
Total Bilirubin Assay
Calculations
Linearity
Note
Causes of Hyperbilirubinemia Unconjugated (Indirect) Hyperbilirubinemia
Conjugated (Direct) Hyperbilirubinemia
Interfering Factors
Comments
Icterus Index
Reagents
Method
Calibration Curve
TOTAL PROTEINS
Biuret Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
SERUM ALBUMIN
Determination of Serum Albumin (BCG Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values (Albumin)
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Note
Normal Values
Total Proteins
Specimen Collection and storage
Clinical Relevance
Causes of Hypoalbuminemia
Reduced Synthesis
Increased Loss
Increased Catabolism
Multifactorial
Disorders Associated with Polyclonal Gammopathies
Chronic Liver Disease
Collagen Diseases
Chronic Infections
Miscellaneous
Causes of Monoclonal Gammopathies
Interfering Factors
SERUM CHOLESTEROL
Cholesterol (CHOD/PAP Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
Normal Values
Clinical Relevance
Interfering Factors
Patient Preparation
HDL CHOLESTEROL
PEG/CHOD-PAP Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Precipitation of VLDL and LDL
Cholesterol Assay
Calculations
Calculation of LDL Cholesterol (mg/dl)
Linearity
Note
Risk Factor
HDL Cholesterol PPT Set (PEG Precipitation Method) (Courtesy: Tulip group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Procedure for the cholesterol assay
Calculations
Linearity
Note
Clinical Relevance
Interfering Factors
Patient Preparation
Patient Aftercare
Cholesterol: LDL and VLDL
Normal Values
LDL-Cholesterol Fully Enzymatic, Colorimetric Test (Courtesy: Randox)
Principle
Sample
Reagents
Preparation of Reagents
Procedure
Calculation
Using a Standard
Calculation of the LDL-cholesterol
Using a Factor
Calculation the LDL-Cholesterol
Clinical Interpretation
Note
Test Significance
Triglycerides (GPO/PAP Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
Normal Values
Classification of Triglyceride Levels
Clinical Implications
BLOOD GLUCOSE
Glucose (GOD/POD Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Note
Body Fluid, Glucose
Normal Values
Clinical Relevance
Persistent Hyperglycemia
Transient Hyperglycemia
Persistent Hypoglycemia
Transient Hypoglycemia
URIC ACID
Uricase/PAP Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Normal Values
Clinical Relevance
Factors Affecting Serum Uric Acid levels
Increased Production, Raised Serum Levels
Decreased Excretion, Raised Serum Levels
Increased Excretion, Lowered Serum Levels
Decreased Production, Lowered Serum Levels
CALCIUM
OCPC Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Note
Calcium (Arsenazo III method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Note
Normal Values
Specimen Collection and Storage
Clinical Relevance
Hypercalcemia (increased total calcium)
Hypocalcemia (decreased total calcium levels)
Increased ionised calcium
Decreased ionised calcium
Be Careful
Interfering Factors
PHOSPHORUS
Molybdate UV Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
Phosphorus Mod Gomorri's Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Notes
Normal Values
Clinical Relevance
Hyperphosphatemia (increased phosphorus levels)
Hypophosphatemia (Decreased phosphorus levels)
Interfering Factors
CHLORIDE
Thiocyanate Method Courtesy: Tulip Group of Companies
Principle
Normal Reference Values
Chloride Kit
Storage/stability
Reagent Preparation
Procedure
Chloride Assay
Linearity
Notes
Calculation
Normal Values
Clinical Relevance
Interfering Factors
Be Careful
SERUM IRON AND TIBC
Ferrozine Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Iron assay
TIBC assay
Calculations
Linearity
Notes
Clinical Relevance
Interfering Factors
TRACE ELEMENTS
ZINC
ZINC (Colorimetric Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Notes
Normal Values
Clinical Relevance
Toxic Level Symptoms
Deficiency Symptoms
Values are Increased in
Values are Decreased in
COPPER
Colorimetric Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal reference values
Storage/stability
Reagent Preparation
Working Reagent
Sample Material
Procedure
Calculations
Linearity
Notes
Clinical Relevance
Toxic Level Symptoms
Deficiency Symptoms
Values are Increased in
Copper Urine
Normal Values
Values are increased in
Values are decreased in
MAGNESIUM
Calmagite Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Notes
Normal Values
Clinical Relevance
Toxic Level Symptoms
Deficiency Symptoms
Values are Increased in
Values are Decreased in
Magnesium in Urine
Values are increased in
Values are Decreased
AUTOMATION IN CLINICAL CHEMISTRY
Instrumentation
Present Status
Benefits of a Semiautomatic Analyser
Economy
Wide Spectrum of Tests
Speed
Accuracy and Reliability
Convenience
Non-dependence on Technicians
Business Growth
Which Lab Needs Automation?
Selection of A Model
Analyser Classification
Semiauto Analysers
Batch Analysers
Random Access Auto Analyser
Clin Check Plus (Courtesy: Tulip Group of Companies)
EP/KIN/FXT/MSD and ABS mode
Features
Technical Features CCP
Screen Master 3000 (Courtesy: Tulip Group of Companies)
Features
Technical Features of Screenmaster 3000
Map Lab Plus (Courtesy: Tulip Group of Companies)
Features
Technical Features of Maplab Plus
Fully (Courtesy Tulip Group of Companies)
System Overview
Modern
Compact
Software
Technical Specifications of Fully Measuring System
PRINCIPLES OF QUALITY ASSURANCE AND STANDARDS FOR CLINICAL CHEMISTRY
I. Preanalytical Factors Important in Clinical Chemistry
A. Specimen Collection, Handling, and Transport to the Laboratory
B. Specimen Identification
C. Test Identification
D. Specimen Accessioning
E. Client Communication and Education
F. Personnel Safety
G. Laboratory Environment
H. Personnel Requirements
II. Analytical Factors Important in Clinical Chemistry
A. Monitoring
1. Internal monitoring should include the following
2. External monitoring should include participation in an external proficiency program
B. Method Validation
1. Accuracy—Perform either (a) or (b)
2. Precision—Perform either (a) or (b)
3. Sensitivity—Perform (a), (b) or (c)
4. Specificity—Perform (a) or (b)
5. Linear reportable range
6. Linearity—Perform either (a) or (b)
7. Reference intervals
C. Instrumentation
1. Instrument performance
2. Function checks
3. Calibration
4. Laboratory personnel knowledge of equipment and its use, including, but not limited to:
D. Quality Control
E. Procedures Manual
F. Comparison of Test Results
Postanalytical Factors Important in Clinical Chemistry
A. Computer Entry of Data
B. Report Generation
C. Report Delivery
D. Specimen Storage
E. Specimen Disposal
F. Personnel Safety
G. Laboratory Environment
H. Personnel Requirements
20:
Enzymology
α AMYLASE
Serum and Urine—α Amylase (Direct Substrate Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal reference values
Storage/stability
Reagent Preparation
Sample Material
Procedure
For Urine as Sample
Calculations
Linearity
Note
Normal Values
Increased levels found in
Pronounced elevation (5 or more times normal)
Moderate elevation (3 to 5 times normal)
Decreased Levels are found in
LIPASE
Lipase Serum (Turbidimetric Method) Courstesy: Randox
Intended Use
Clinical Significance
Turbidimetric Method
Principle
Sample
Reagent Composition
Safety Precautions and Warnings
Stability and Preparation of Reagents
Materials Provided
Materials Required but not Provided
Procedure Notes
Manual—Lipase
Procedure
Calculation
Quality Control
Interference
Normal Values
Linearity
Normal Value
Clinical Relevance
Increased
Description
PHOSPHATASES
Units for Reporting Phosphatase Activity
Specimen
ALKALINE PHOSPHATASE (ALP)
Clinical Significance
Alkaline Phosphatase, Serum
Normal Values
Alkaline Phosphatase (Mod. Kind and King's Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Calculations
Linearity
Note
Alkaline Phosphatase (DEA) (pNPP Kinetic Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Temperature Conversion Factors
Linearity
Note
Clinical Relevance
Elevated Levels
Reduced Levels
Interfering Factors
Alkaline Phosphatase Isoenzymes
Normal Values
Clinical Relevance
ACID PHOSPHATASE
Clinical Significance
Normal Values
Specimen
Mod. King's Method Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Assay
Calculations
Linearity
Notes
Acid Phosphatase (á Naphthylphosphate Kinetic Method) (Courtesy: Tulip Group of Companies)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Total ACP Assay
Non Prostatic ACP Assay: (Tartrate Inhibited)
Calculations
Linearity
Notes
Clinical Relevance
Interfering Factors
Serum Alkaline Phosphatase and Acid Phosphatase
TRANSAMINASES
Clinical Significance
Evaluation of Methods
Specimen
SGOT (AST) (Reitman and Frankel's Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Assay
Note
SGOT (AST) (Mod. IFCC Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Substrate Start Assay
Sample Start Assay
Calculations
Substrate/sample start
TEMPERATURE CONVERSION FACTORS
Linearity
Note
SGPT (ALT)(Reitman and Frankel's Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Plotting of the Calibration Curve
Assay
Note
SGPT (ALT) (Mod. IFCC Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Substrate Start Assay
Sample Start Assay
Calculations
Substrate/Sample start
Linearity
Note
Clinical Relevance of SGPT/ALT/ALAT
A. Increased levels are found in
B. SGOT/SGPT Comparison
Clinical Relevance of SGOT/AST/ASAT
A. Increased levels occur in
B. Decreased levels occur in
C. Interfering factors
GAMMA-GLUTAMYL TRANSPEPTIDASE (GGTP) BLOOD
Normal Values
Glutamyl Transferase (Carboxy Substrate Method) Courtesy: Tulip Group of Companies
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Calculations
Linearity
Note
LACTIC DEHYDROGENASE
Clinical Significance
Normal Values
LDH (P-L) (Mod. IFCC Method)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Substrate Start Assay
Sample Start Assay
Calculations
Linearity
Note
Clinical Relevance
Myocardial infarction
Pulmonary Infarction
Conditions in general and according to degree of increase in levels.
Decreased LDH levels are associated with a good response to cancer therapy
Interfering Factors
Electrophoresis of LDH Isoenzymes
Normal values
Test Significance
Clinical Relevance
CK (NAC Act) (Mod. IFCC Method)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample Material
Procedure
Substrate Start Assay
Sample Start Assay
Calculations
Linearity
Note
CK MB (NAC Act) (Immunoinhibition/Mod. IFCC method)
Summary
Principle
Normal Reference Values
Storage/stability
Reagent Preparation
Sample material
Procedure
Substrate Start Assay
Substrate Start Assay
Calculations
Linearity
Note
Creatine Kinase (CK)
Clinical Relevance
C K Isoenzymes
Normal Values (at 37°C)
CK
Diagnostic Alert
6% Rule
Increased Total CK
Increased CK-BB
Increased CK-MB
Increased CK-MM
Decreased Total CK
Decreased CK-BB, CK-MB, CK-MM
Interfering Factors
Enzymology in Relation to Heart Disease
Introduction
Clinical Presentation
Diagnosis of MI
Electrocardiogram (ECG)
Imaging
Biochemical Markers of Myocardial Necrosis
CK and its Isoenzymes—The Time-tested Biomarker
Diagnostic Applications of CK and its Isoenzymes
Special Findings
Isoforms of CK
Biochemistry and Physiology
CK activity—Skeletal Muscle Disease
Activity of total CK and CK-MB as a result of ACUTE skeletal muscle damage
CK activity—Heart Disease
Activity of Total CK and CK-MB as a result of CARDIAC muscle damage
Clinical Enzymology In MI—A Brief Analysis
Method of Determination—Total CK
Method of Determination—CK isoenzymes
Immunoinhibition method
Isoenzyme electrophoresis method
Immunoassay for Determination of CK-MB Mass (Concentration)
Interferences have been described in these assays too
Critical Determinants of CK and CK-MB Reagent System Design
Other Biomarkers of MI
Myoglobin
Cardiac Troponin-l (cTnl)
Important Terms
Angina pectoris
Angiography
Aortic stenosis
Arterial embolism
Atheroma
Atria
Defibrillation
Delirium Tremens
Diaphoresis
Dyspnoea
Endocarditis
Endocardium
Epicardium
Epigastrium
Glycogenosis Type V
Malignant Hyperthermia
Marantic Endocarditis
Muscular Dystrophy
Myasthenia Gravis
Myocarditis
Myocardium
Myocytes
Myositis
Myotonia Congenita
Ocular Myositis
Parkinson's Disease
Pericarditis
Polymyositis
Regurgitation
Resuscitation
Rhabdomyolysis
Spinal Muscular Atrophy
Status Asthmaticus
Syncope
Tachycardia
Tetany
Thrombogenesis
Transmural
Triage
Viral Myositis
Liver Disease (Serum Enzyme Patterns) Values are x Times the Upper Normal Limits
AUTOMATION IN CLINICAL CHEMISTRY RANDOM ACCESS AUTO ANALYSER
Design
Support
Cost
DADE DIMENSION AR CLINICAL CHEMISTRY SYSTEM
Method Capacity
Sample Capacity
Sample Size
Bar Code Symbologies
Throughout
Power Requirements
Physical Dimension
ALFA WASSERMANN ACE CHEMISTRY ANALYZER (Fig. 20.9)
Benchtop Size
Closed Tube Sampling
On-Board Sample and Reagent Refrigeration
Positive Sample and Reagent ID
Auto Repeat and Dilution
Routine Chemistry Assays
Enzymes Assays
Electrolyte Assays
Lipid Assays
Thyroid Assays
Therapeutic Drug Assays
Open Channel Assays*
Drugs of Abuse Open Channel Assays
Electrical Requirement
Environmental Requirements
Physical Dimensions
Roche Hitachi 911 Chemistry Analyzer
Assay Types
Sampling System
ISE System
Reagent System
Beckman Synchron CX7 Clinical System
Features
Quality Control Criteria given with Clinical Chemistry Chapter apply to Enzymology section also.
21:
Blood Gases and Electrolytes
BLOOD GASES
Introduction
Reasons for obtaining blood gases:
Reasons for using arterial blood rather than venous blood to measure blood gases.
Procedure for Obtaining Arterial Blood Sample
Clinical Alert
Blood Gas Symbols
Combination of Symbols
Blood Gases, Arterial (ABG), Blood
Normal Values
Blood Gases, Capillary, Blood
Normal Values
Blood Gases, Venous, Blood
Normal Values
Partial Pressure of Carbon Dioxide (PCO2)
Normal Values
Explanation of Test
Procedure
Clinical Implications
Clinical Alert
Oxygen Saturation (SO2)
Normal Values
Explanation of Test
Procedure
Oxygen (O2) Content
Normal Values
Explanation of Test
Procedure
Clinical Implications
Partial Pressure of Oxygen (PO2)
Normal Values
Background
Explanation of Test
Procedure
Clinical Implications
Carbon Dioxide (CO2) Content or Total Carbon Dioxide (TCO2)
Normal Values
Background
Explanation of Test
Procedure
Clinical Implications
Clinical Alert
Interfering Factors
Blood pH
Normal Values
Background
Explanation of Test
Procedure
Clinical Implications
Clinical Alert
Interfering Factors
Base Excess/Deficit
Normal Values (± 3 mEq/litre)
Explanation of Test
Procedure
Clinical Implications
AUTOMATION IN BLOOD GAS ANALYSIS
The Basis of Blood Gases
Sample Collection
Blood Gas Analyzers
What are blood gases?
IL GEM PREMIER 3000 BLOOD GAS ANALYZER (FIG. 21.1)
Test Methodology
Units in which the test result is reported
IL GEM Premier 3000
Available Cartridges: 28 different cartridges to fit the needs of any institution
Test Menu for Measured Analytes
Software Installation Requirements
AVL COMPACT 2 BLOOD GAS ANALYZER (FIG. 21.2)
AVL Compact 2 Blood Gas Analyzer
CIBA CORNING 840, 850, 860 SERIES BLOOD GAS CRITICAL ANALYTE SYTEM (FIG. 21.3)
Single Base Platform for all your Blood Gas and Critical Analyte Needs
Simple Operation One System Platform to Grow with Your Lab (Fig. 21.5)
Advanced Data Management Capabilities Simpler, Safer Sample Handling (Fig. 21.6)
Reduced Maintenance, Increased Reliability More Reliable Quality Control (Fig. 21.7)
Ciba Corning 840, 850, 860 Series Blood Gas Critical Analyte System
Series 850: Blood Gas and Electrolytes
Series 860: Blood Gas, Electrolytes and Metabolites
Sample Volume
ELECTROLYTE ANALYSIS BY FLAMEPHOTOMETER
Flame Photometer 129 (Courtesy: Systronics)
Microprocessor-Based Automation
Salient Features
Easy Menu Driven Operation
Technical Specifications
Range of Operation
ISE IL 943 Flame Photometer
Features
Standard Solutions
Normal Values
Alterations of Sodium and Extracellular Fluid (ECF)
Hyponatraemia (Serum Sodium Concentration Lower than Normal)
Total-body sodium and ECF volume low
Total body sodium and ECF volume normal
Total body sodium and ECF volume increased
Hypernatraemia (serum sodium concentration higher than normal)
Total body sodium normal, ECF volume low
Total body sodium increased proportionately more than increased ECF volume
Hyperosmolality, without sodium alterations
Abnormalities of Serum and Whole Body Potassium
Hyperkalaemia (serum potassium concentration more than normal)
Inappropriate cellular metabolism
Decreased renal excretion
Hypokalemia (serum potassium concentration lower than normal)
Inappropriate cellular metabolism
Increased excretion
Decreased potassium intake
RAPID DIAGNOSTICS IN ELECTROLYTE ANALYSIS
Bayer 614 Na+K+ Electrolyte Analyzer (Fig. 21.12)
Ranges
Ciba Corning 600 Series
AVL 9180 Series (Fig. 21.13)
22:
Serology/Immunology
BASIC IMMUNOLOGY
Antigen-Immunogen
Antigenicity
Epitopes (Fig. 22.1)
How big is an epitope?
What are the different kinds of Epitopes?
Some Examples of Antigens
Antibody
What is the structure of Antibody?
What is the Kinetics of Antigen – Antibody reaction?
Immunological Reactions
How is binder – ligand assays classified?
What is the difference between all these reactions?
What form of Reaction Takes Place in HLA Typing?
What is the Principle of HLA Typing?
What are the different indicators used in Immunoassay?
Interferences in Immunoassays
Definition of Interference
Pre Analytical Variables
Matrix Effects
1. The effect of reagents
2. Effect of Proteins
Mechanical Interference
Non-specific Interference
Hook Effect
Reduction of Hook effect
Assay Specificity
TECHNOLOGIES
RAPID IMMUNOCHROMATOGRAPHIC TECHNIQUES
Perspective on Membrane-based Rapid Diagnostic Tests
What are the Principles of Membrane-based Rapid Diagnostic Tests?
What are the Components of Membrane-based Rapid Diagnostic Tests and how are they Constructed?
What are the Limitations and Effects of Various Components on the Performance of Membrane Rapid Diagnostic Tests?
How does the Nitrocellulose Membrane affect the Sensitivity of Rapid Diagnostic Tests?
Pore Size and Capture Reagent Binding Properties
Pore Size and Lateral Flow Rate
Why are Colloidal Gold Sol Particles commonly employed in the Detector Reagent in Membrane-based Rapid Diagnostic Tests?
Colloidal Gold Sol Particles as Indicator
Effect of Shape of Colloidal Gold Sol Particles on Stability
Effect of Shape of Colloidal Gold Sol Particles on Sensitivity
Effect of Size on Colour of Colloidal Gold Sol Particles
Why are Variations in Band Appearance Commonly Observed in Membrane-based Rapid Diagnostic Tests Employed for Antigen Detection?
What is the Role of Sample Pad in Membrane-based Rapid Diagnostic Tests?
What is the Role of Soak Pad in Membrane-based Rapid Diagnostic Test?
Why do “Faint Ghost Bands” Appear at the Test Region if the Device is left out on the Worktable?
How do we Interpret “Broken Bands” at the Test/Control Region?
Excess Sample Volume Dispensed
ENZYME IMMUNOASSAY
Introduction
Classification of ELISA
1. Direct ELISA
2. Indirect ELISA
3. Capture ELISA
a. Antigen Capture
b. Antibody Capture
4. Competitive ELISA
a. Direct Antibody Competition
b. Direct Antigen Competition
5. Streptavidin-Biotin ELISA
Avidin-Biotin relation of Ag-Ab binding
Advantages of Streptavidin
Significance of Coating Streptavidin as Solid Phase
6. Immunocapture ELISA
7. Interference Corrected ELISA
8. Homogeneous ELISA
Latex Particle Agglutination Immunoassay (LPAIA)
Enzyme-Multiplied Immunoassay Technique (EMIT)
Apoenzyme Reconstitution Immunoassay System (ARIS)
Fluorophore-Labelled Homogeneous Immunoassay (FLHIA)
Homogeneous Fluorescence Polarisation Immunoassay (FPIA)
Microparticle Enzyme Immunoassay (MEIA)
9. Heterogeneous ELISA
10. Quantitative ELISA
11. Semi-quantitative ELISA
12. Qualitative ELISA
ELISA: Practical Aspects
Solid surface
Calibrators/Controls
The Features of an Ideal Calibrator are
References
Conjugate
Most Commonly Used Enzymes in Immunoassays are
Substrate
The commonly used substrates
Stop Solution
Steps in ELISA
Dilution
Addition
Incubation
Wash
Estimation
Interferences in Immunoassays
Definition of Interference
Preanalytical Variables
Patient based
Specimen based
Nature of the sample
Hemolysis and Hyperbilirubinaemia
Assay based
Analytical Variables
Washing Errors
Pipetting error
Equipment error
Procedural errors
Postanalytical Variables
Use of Wrong Reference Values
Use of Wrong Units
ELISA Troubleshooting
Practical Tips on ELISA
Normal Washing
Strip/Plate Washers
Washing Tips
Pipetting Tips
Microplates
Substrate Preparation
Conjugates
General tips
Matrix Effects
1. The Effect of Reagents
Immunoassay labels
Separation of the Antibody-bound and Free Fractions
2. Effect of Proteins
Albumin
Rheumatoid Factors
Complement
Lysozyme
Endogeneous Hormone-binding Proteins
Abnormal forms of Endogeneous binding Proteins
Heterophilic Antibodies
Mechanical Interference
Nonspecific Interference
Hook Effect
Reduction of Hook Effect
Edge Effect
Assay Specificity
Assay Sensitivity
CHEMILUMINESCENCE: THE TECHNOLOGY
Introduction
Components of Chemiluminescent System
The Signal
Signal Quantity
Signal Duration
Flash
Glow
Instrumentation
Comparison with Other Technologies
Drawbacks of Other Technologies
Radio Immunoassay
Enzyme Immunoassay
Fluorescence Immunoassay
References
Advantages of Chemiluminescence Technology
Advantages
Advantages
POLYMERASE CHAIN REACTION (FIG. 22.22)
Denaturation by Heat
Annealing Primer Binding to Target
Extension
1. DNA is denatured
2. Another round
3. Another round
4. Another round
5. Continued rounds
Limitations/Difficulties
Types of PCR
Nested PCR
Real-Time PCR
Multiplex PCR
Differential PCR
RIA
Measurement of Radioactivity
LIQUID HANDLING SYSTEMS CHAPTER
Pipetting Basics
Classification of Pipettes
Based on the Material
1. Glass pipettes
2. Plastic pipette
3. Metal pipettes
Based on Function
Pipetting Techniques
Forward Pipetting
Reverse Pipetting
Repetitive Pipetting
Whole Blood Pipetting
Proper Pipetting Skills
Criteria for Choosing the Right Pipette
Accuracy and Reproducibility
Durability
Ergonomics
Specific Applications
Quality Of Product Support
Use of Multiple Brands of Pipettes
STREPTAVIDIN-BIOTIN SYSTEMS
Streptavidin-biotin Systems, Better than Traditional Antibody Capture Systems
Why Streptavidin-Biotin Based Iema Systems are a Better Choice for Tropical Laboratories?
Signal Noise Ratio
Primary Calibrators and Matrix Effect
Ultra Sensitive Assays
Epitype Characterization
REPRESENTATIVE ELISA/CLIA TECHNIQUES
ELISA/CLIA ANALYTE DETERMINATION PRINCIPLES
Competitive Elisa
Total Triiodothyronine (tT3) (Courtesy: Lilac Medicare)
Summary and Explanation of the Test
Principle
Competitive Enzyme Immunoassay
Reagents
Materials Provided
Precautions
Specimen Collection and Preparation
Materials Required But Not Provided
Reagent Preparation
Test Procedure
Quality Control
Results
Q.C. Parameters
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Performance Characteristics
A. Precision
B. Accuracy
C. Specificity
D. Sensitivity
Immunoenzymometric/Sandwitch (Streptavidin-Biotin) Elisa
Thyrotropin (TSH) (Courtesy: Lilac Medicare)
Intended Use: The Quantitative Determination of Thyrotropin Concentration in Human Serum by a Microplate Immunoenzymometric assay Mfd: Monobind Inc.
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Reagents
Materials Provided
Precautions
Specimen Collection and Preparation
Required but not Provided
Reagent Preparation
Test Procedure
Quality Control
Results
Q.C. Parameters
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Performance Characteristics
A. Precision
B. Accuracy
C. Sensitivity
D. Specificity
E. Correlation between 1 hr and 2 hr incubation
Immunoenzymometric/Sandwich Sequential (Streptavidin-Biotin) Elisa
Prolacting Hormone (PRL) Sequential Method (Courtesy: Lilac Medicare)
Summary and Explanation of the Test
Principle
Immunoenzymometric Sequential Assay (Type 4)
Reagents
Materials Provided
Required But Not Provided
Precautions
Specimen Collection and Preparation
Reagent Preparation
Test Procedure
Quality Control
Calculation of Results
QC Parameters
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Performance Characteristics
A. Precision
B. Accuracy
C. Sensitivity
D. Specificity
“Mu Capture” Immunocapture Elisa
HAV-IgM Courtesy: Lilac Medicare
Introduction
Principle of the Assay
Content of the Kit and Reagents Preparation
Conditions and Notices
Storage and Stability of the Kit
Shelf-life of the Kit
Materials not Provided in the Kit
Samples
Reagents Preparation
Washing Instruction
Assay Procedure
Assay Scheme
Validity of the Assay
Calculation of Results
Assay Performances
Sensitivity
Specificity
Reproducibility
Repeatability
Automation Procedure
Precautions in Use
Waste Management
Quantitative Indirect Elisa
HBs Ab
Introduction
Principle of the Assay
Test Conditions and Notices
Content of the Kit
Strips Microplate
Enzyme Conjugate 1 vial of 0.8 ml
Conjugate Diluent 1 vial of 16 ml
Washing Solution 1 vial of 50 ml
Chromogen 1 vial of 8 ml
Substrate 1 vial of 8 ml
Stop Solution 1 vial of 12 ml
Additive 1 vial of 10 ml
Calibration Curve 5 vials of 2 ml each
Cardboard Sealers 2
Storage and Stability
Materials and Provided
Samples
Preparation of Reagents
Washing Instructions
Assay Procedure
Validity of the Assay
Calculation of Results
Quantitative Assay
Qualitative Assay
Assay Performances
1. Sensitivity
2. Specificity
3. Reproducibility
Direct Elisa
DNase Activity
Summary and Explanation of the Test
Principle of the Test
Warnings and Precautions
Contents of the Kit
Storage and Stability
Materials Required
Equipment
Preparation of Reagents
Specimen Collection, Storage and Handling
Procedural Notes
Preparation of Reagents
Sample Preparation
Test Procedure
Interpretation of Results
Quality Control
Calculation of Results
Recommended Lin-Log Plot
Calculation Example
Interpretation of results
Performance Characteristics
Precision (Reproducibility)
Sensitivity
Specificity
Calibration
Limitations of Procedure
Interfering Substances
CLIA—Immunoenzymometric/Sandwitch (Streptavidin-Biotin) ELISA
Thyrotropin (TSH)
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Materials Provided for 96-well Microplate
Materials [Required But Not Provided]
Precautions
Specimen Collection and Preparation
Reagent Preparation
Test Procedure
Quality Control
Results
Q.C. Parameters
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Performance Characteristics
A. Precision
B. Accuracy
C. Sensitivity
D. Specificity
TESTS FOR SYPHILIS
VDRL Test
Conventional VDRL Test
Principle
Equipment Required
Precautions
Sample
Preparation of Patient's Serum (Inactivation)
Reagents Usually Supplied
Preparation of Working Solutions
Working Antigen Suspension
Note
Preliminary Testing of the Working Antigen Suspension
Storage and Stability
Procedure
Qualitative Test
Quantitative Test
Note
Interpretation of Test Results
Notes
Limitation of the Test
MODIFIED VDRL REAGENT Trepolipin®
Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Additional Material Required
Test Procedure
Qualitative Method
Quantitative Method
Interpretation of Results
Qualitative Method
Quantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
TOLUIDINE RED UNHEATED SERUM TEST FOR RAPID SERODIAGNOSIS OF SYPHILIS REDGEN® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Additional Material Required
Test Procedure
Qualitative Method
Quantitative Method
Interpretation of Test Results
Qualitative Method
Quantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Problem: Negative Control Giving False Positive Reaction
LATEX SLIDE TEST FOR VDRL SYPHFINAL®MFD: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Additional Material Required
Test Procedure
Qualitative Method
Quantitative Method
Interpretation of Test Result
Qualitative Method
Quantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: Negative Control Giving Positive Reaction
Problem: False Negative Results
RAPID PLASMA REAGIN (RPR) CARD TEST/CARBON ANTIGEN FOR SYPHILIS TESTING (CARBOGEN®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the RPR Kit
Additional Material Required
Test Procedure
Qualitative Method
Quantitative Method
Interpretation of Test Results
Qualitative Method
Quantitative Method
Remarks
Troubleshootings
Problem: False Positive Results
Problem: Negative Control Giving False Positive Reaction
Problem: False Negative Results
Problem: Negative Control Giving False Positive Reaction
ONE-STEP TEST FOR SYPHILIS: DIPSTICK Syphicheck® Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Materials Supplied
Additional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Performance Characteristics
ONE-STEP TEST FOR SYPHILIS (DEVICE) Syphicheck® Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Remarks
THIRD GENERATION DOUBLE ANTIGEN SANDWICH ENZYME LINKED IMMUNOSORBENT ASSAY (ELISA) FOR THE DETECTION OF ANTIBODIES TO TREPONEMA PALLIDUM IN HUMAN SERUM OR PLASMA Treplosia 3.0 Courtesy: Tulip Group of Companies
Trepolisa 3.0
Summary and Explanation
Principle of the Assay
Kit Components
Storage and Stability
Material Required but not Provides
Sample Collection
Precautions
Reagent Preparation
Test Procedure
Calculations
Interpretation of Results
Limitations of the Test
TESTS FOR TYPHOID/ENTERIC FEVER
WIDAL ANTIGEN SET/ANTIGENS FOR TUBE TESTS (Typhochek®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Reagent Pack
Additional Material Required
Procedure
a. Standard Tube Test Method
Interpretation of Results
Remarks
Troubleshootings
Problem: False Positive Results
Problem: False Negative Results
WIDAL ANTIGEN SET/ANTIGENS FOR SLIDE AND TUBE TESTS (Tydal®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Reagent Pack
Additional Material Required
Quantitative Method
Procedure
Slide Screen Method
Slide Semiquantitative Method
Quantitative Method
Tube Test Procedure
Interpretation of Results
Slide Screen Method
Slide Semiquantitative Method
Quantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
REDUCED WIDAL ANTIGEN SET: O AND H FOR TUBE TESTS (Vital Widal®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Additional Material Required
1. Procedure
Tube Test Method
Interpretation of Results
Remarks
Positive Control For Widal Test
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Additional Material Required
Procedure
Slide test Method
Interpretation of Results Slide Test Method
Troubleshootings
Problem: False Positive Results
Problem: False Negative Results
RAPID TEST FOR DETECTION IGM ANTIBODIES TO S. TYPHI IN SERUM/PLASMA/WHOLE BLOOD (DEVICE) Enterocheck – WB®
Enterocheck-WB
Summary
Principle
Reagents and Materials Supplied
Optional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Remarks
SLIDE AND TUBE TEST FOR DETECTION OF ANTIBODIES TO BRUCELLA ABORTUS/MELITENSIS Brucel A/M®
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Quantitative Method
Procedure
Slide Test Method
Qualitative Method
Semiquantitative Method
Tube Test Method
Interpretation of Results
Slide Test Method
Qualitative Method
Semiquantitative Method
Tube Test Method
Remarks
Toubleshootings
Problem: False Positive Results
Problem: False Negative Results
SLIDE SCREENING TEST FOR BRUCELLA ANTIBODIES (Brucel-RB)®
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Additional Material Required
Procedure
Slide Test Method
Qualitative Method
Semiquantitative Method
Interpretation of Results
Qualitative Method
Semiqualitative Method
Remarks
BRUCELLOSIS POSITIVE CONTROL
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Additional Material Required
Procedure
Slide Test Method
Interpretation of Results
Slide Test Method
RAPID TEST FOR IgM AND IgG ANTIBODIES TO DENGUE VIRUS: DENGUE FEVER (Denguecheck-WB®) (Device)
Introduction
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Interpretation of Results
Negative Test Result
Positive Test Result
Remarks
Troubleshooting
Dengue Check WB and Lepto check-WB
Problem: False Positive Results
Problem: Faint lines observed in control and test region
Problem: Delayed Results and Altered Flow
Problem: False negative results
Problem: Invalid results
TEST FOR INFECTIOUS MONONUCLEOSIS (IMMUTEX®)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Materials Provided with the Kit
Reagent
Accessories
Additional Material Required
Test Procedure
Qualitative Method
Interpretation of Results
Remarks
Troubleshooting
Immutex
Problem: False Positive Results
Problem: False Negative Results
RAPID TEST FOR IgM ANTIBODIES TO LEPTOSPIRA: LEPTOSPIROSIS (Leptochek WB®) (Device) Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Material Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Negative Test Result
Performance Characteristics
Remarks
Troubleshooting
Problem: False Positive Results
Problem: Faint Lines Observed in Control and Test Region
Problem: Delayed Results and Altered Flow
Problem: False Negative Results
Problem: Invalid Results
RAPID TEST FOR MALARIA PAN (DEVICE) Parabank®
Introduction
Summary
Principle
Reagents and Materials Supplied
Optional material Required
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Limitations of the Test
Troubleshooting
Problem: False Positive Results
Problem: Erroneous Results (False negative or False positive results)
Problem: False Negative Results
Problem: Interpretation of Test Results is Difficult
RAPID TEST FOR P.FALCIPARUM MALARIA (Paracheck Pf®) (Device) Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Materials Supplied
Paracheck Pf Kit contains
Optional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Limitations of the Test
Troubleshooting
Problem: False Positive Results
Problem: Erroneous Results (False negative or False positive results)
Problem: False Negative Results
Problem: Difficulty in Interpretation of Test Results
RAPID TEST FOR MALARIA (Parascreen®) Pan/Pf (Device) Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Material Supplied
Optional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Limitations of the Test
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Problem: Interpretation of Test Results is Difficult
RAPID TEST FOR MALARIA PV/PF (DEVICE) Falcivax® Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Material Supplied
Optional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Limitations of the Test
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Problem: Interpretation of Test Results is Difficult
RAPID TEST FOR MALARIA PAN/PV/PF (Paramax-3®)(Device)
Introduction
Summary
Principle
Reagents and Material Supplied
Optional Material Required
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Limitation of the Test
SLIDE TEST FOR C-REACTIVE PROTEIN (Rhelax CRP®)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Material Provided with the Kit
Reagent
Accessories
Additional Material Required
Test Procedure
Qualitative Method
Semiquantitative Method
Interpretation of Test Results Qualitative Method
Semiquantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Problem: Positive Control giving Negative Reaction
Problem: Positive Result with our Kit and Negative with Another Kit or Vice Versa
SLIDE TEST FOR ANTI STREPTOLYSIN O (Rhelax ASO®)
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Material Provided with the Kit
Reagent
Accessories
Additional Material Required
Test Procedure
Qualitative Method
Semiquantitative Method
Interpretation of Test Results
Qualitative Method
Semiquantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: Delayed Agglutination
Problem: False Negative Results
Problem: Positive Control Giving Negative Reaction
Problem: Positive Result with this Kit and Negative with Other Kit or Vice Versa
SLIDE TEST FOR RHEUMATOID FACTORS (Rhelax RF®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Material Provided with the Kit
Reagent
Accessories
Additonal Material Required
Test Procedure
Qualitative Method
Semiquantitative Method
Interpretation of Test Results
Qualitative Method
Semiquantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Problem: Positive Control giving Negative Reaction
Problem: Delayed Agglutination
SLIDE TEST FOR ANTI DEOXYRIBONUCLEOPROTEIN (Rhelax SLE®)Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Preparation
Material Provided with the Kit
Reagent Pack
Accessories Pack
Additional Material Required
Test Procedure
Qualitative Method
Semiquantitative Method
Interpretation of Results
Qualitative Method
Semiquantitative Method
Remarks
Troubleshooting
Problem: False Positive Results
Problem: Delayed Positive Results
Problem: False Negative Results
Problem: Positive control giving Negative Reaction
Problem: Delayed Agglutination
Diagnostic Methods for Detecting Antinuclear Antibodies
ANA Immunofluorescence (FANA)
1. ANA Titre
2. ANA Pattern
Peripheral (Rim or Shaggy)
Speckled
Homogeneous (Smooth)
Nucleolar
Disadvantages
First and Second Generation EIA
Disadvantages
Third Generation EIAs
ANA Testing
ANA: Description
ANA/ANF is positive in
Anti-dsDNA
Clinical Relevance
Antibodies against DNA can be Differentiated into Two Groups
Normal Values
Anti-dsDNA Ab Interpretaton
ANAcombi (ANA Profile Testing)
Clinical Relevance
SS-A/Ro Interpretation
ANA Profile
ANA Profile Positivities
SS-B/La Interpretation
Sm Interpretation
SmRNP Interpretation
Scl-70 Interpretation
Jo-1 Interpretation
ANTI NEUTROPHIL CYTOPLASMIC ANTIBODIES—ANCA
Types of ANCA
Proteinase 3
Myeloperoxidase
BPI
Elastase
Cathepsin G
Lysozyme
Lactoferrin
Different Conditions Associated with ANCA
Wegener's Granulomatosis
Microscopic Polyangiitis
Churg-Strauss Syndrome
Drug-Induced Vasculitis
Clinical Manifestations
Methods of Diagnosis
Anti-Cardiolipin IgM/IgG
Clinical Relevance
Indication for Determination of Anti-cardiolipin Antibodies
Normal Values
Anticardiolipin IgA
Clinical Relevance
Normal Values
Antiphospholipid Screen (IgG/IgM)
Clinical Relevance
Normal Values
HEPATITIS MARKERS
Hepatitis B
Introduction
Definition
Prevalence
Transmission
Sexual Transmission
Transmission through Needle Sharing
Transmission through Accidental Needle Sticks
Transmission from Mother to Child
Pathophysiology
Signs and Symptoms
Diagnosis
Complications
Outcome and Natural History
Treatment
Drug Therapies
Liver Transplant
How can the spread of hepatitis B be prevented in the workplace?
Infection Control
Immunization
Immunization Before Contact
Immunization After Contact
AUSTRALIA ANTIGEN HBsAg (Virutex HBsAg) Courtesy: Tulip Group of Companies
Slide Test for Hepatitis B Surface Antigen
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Sample Collection and Storage
Material Provided with the Kit
Reagent Pack
Accessories Pack
Additional Material Required
Procedure
Interpretation of Results
Remarks
ONE STEP TEST FOR HBsAG Virucheck® Dipstick Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure
Negative
Positive
Limitations of the Test
ONE-STEP TEST FOR HBsAG Virucheck® Device Courtesy: Tulip Group of Companies
Introduction
Principle
Regents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Limitation of the Test
VIRAL HEPATITIS C
Introduction
Background
Classification of the HCV Virus
HCV Genotypes, Subtypes and Quasispecies
Clinical Relevance of the Genotypes
Epidemiology of HCV
Biological Basis of Transmission of HCV
Spectrum of Clinical HCV Infection
Clinical Symptoms and Signs
Clinical Features of Cirrhosis
Extrahepatic Manifestations
Different Diagnosis
Basis for Diagnosis of HCV Infections (Fig. 22.33)
IgM Class Anti HCV Antibodies
Supplementary Assays
Recombinant Immunoblot Assays
HCV RNA Based Assays
Serological Diagnosis of HCV: Open Issues
Prevention of HCV infection
HCV Flavicheck® Device Courtesy: Tulip Group of Companies
One-Step Immunochromatographic Test for HCV Antibodies
Introduction
Summary
Principle
Reagents and Materials Supplied
Kit Components
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure and Interpretation of Results
Remarks
ELISA-BASED TESTS HAV AB Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HAV IgM Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBc Ab, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBc IgM, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBeAb, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBeAg, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBe Ag/Ab, Courtesy: Lilac Medicare
Introduction
Calculation of Results
HBeAg Test
Example of calculation
HBeAb Test
Example of calculation
HBs Ab, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Quantitative Assay
Example of Standard Curve
Qualitative Assay
Example of calculation
HBsAg One Step Courtesy: Lilac Medicare
Calculation of Results
Example of Calculation
HBsAg, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HBsAg Confirmatory Test Courtesy: Lilac Medicare
Introduction
Calculation of Results
Micro ELISA HCV Courtesy: Lilac Medicare
Calculation of Results
Example of Calculation
HCV IgM, Courtesy: Lilac Medicare
Calculation of Results
HCV-Ab Confirmatory Test Courtesy: Lilac Medicare
Interpretation of Results
HDV Ab, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HDV Ag, Courtesy: Lilac Medicare
Calculation of Results
Example of Calculation
HDV IgG, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HDV IgM, Courtesy: Lilac Medicare
Results
Example of Calculation
HEV Ab, Courtesy: Lilac Medicare
Calculation of Results
Example of Calculation
HEV IgG, Courtesy: Lilac Medicare
Introduction
Calculation of Results
Example of Calculation
HEV IgM, Courtesy: Lilac Medicare
Calculation of Results
Example of Calculation
Torch Infections—Introduction
Toxoplasma Infection
Rubella Infection
Cytomegalovirus Infection
Herpes Simplex Virus (1 + 2) Infections
TOXOPLASMA INFECTIONS
Slide Test for Antibodies to Toxoplasma gondii, Toxogen® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Storage
Material Provided with the Kit
Reagent Pack
Accessories Pack
Additional Material Required
Test Procedure
Qualitative Method
Semi Quantitative Method
Interpretations of Results
Qualitative Method
Semi Quantitative Method
Differentiation IgG - IgM
Significance of Test Results
Remarks
TORCH SCREEN IgM EIA Kit Courtesy: Lilac Medicare
Quality Control
Results
Calculation
Reporting Results
Interpretation of Results
Torch Screen IgG EIA Kit Courtesy: Lilac Medicare
Quality Control
Results
Calculation
Reporting Results
Interpretation of Results
HUMAN IMMUNODEFICIECNY VIRUS
HIV Virus
Origin of HIV
The HIV Virion
HIV Types and Variants
Life Cycle of the HIV
Attachment to the Lymphocyte Membrane
Entry of the Viral RNA
Reverse Transcription
Integration of Viral DNA
Transcription: Back to RNA
Translation: RNA → Proteins
Viral Protease
Assembly and Budding
Clinically Apparent Disease
HIV Specific Prognostic Markers
Non Specific Markers of HIV Progression (Fig. 22.46)
HIV Diagnostic Testing Techniques
Enzyme Immunoassays (EIA)
Generation of Assays
EIA Assay Formats
Type 1: Indirect or Antiglobulin (Fig.22.48)
Type 2: Competitive Assay (Fig.22.49)
Type 3: Class Specific Antibody Capture Assay (Fig.22.51)
Type 4: Double Antigen Sandwich or Immunometric Assay
HIV Antigen EIA's
Confirmatory/Supplementary Assays
1. Western Blot
2. Indirect Immunofluorescence
3. Radioimmunoprecipitation Assay
Virus Detection Methods
p24 Antigen and Nucleic Acid Technologies (PCR)
Rapid Tests for the Detection of Anti-HIV Antibodies
Flow Through Technology
Lateral Flow Technology
Flow Through v/s Lateral Flow Technology
Application of HIV Testing
Screening
Diagnosis
Approach to Confirmatory Supplementary Tests
Western Blot (WB)
NAT-PCR Based Methods
Alternative Approach to Confirmatory Testing
WHO/UNAIDs Strategies for HIV Antibody Screening
Discrimination Between HIV-1 and HIV-2 Infection
Paediatric HIV Infection
Transmission of HIV from Mother to Infants
Diagnostic Challenges: Child Born to a HIV Infected Mother
RAPID IMMUNOCONCENTRATION TEST FOR HIV I AND HIV 2 ANTIBODIES FLOW THROUGH METHOD Retroquick-HIV® Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Materials Supplied
Kit components
Storage and Stability
Specimen Collection and Preparations
Test Procedure
Interpretation of Results
Negative Test result
Positive Test results
Invalid Test result
Remarks
RAPID IMMUNOCHROMATOGRAPHIC TEST FOR HIV 1/2 ANTIBODIES LATERAL FLOW METHOD Retrocheck® HIV Courtesy: Tulip Group of Companies
Introduction
Summary
Principle
Reagents and Material Supplied
Kit Components
Storage and Stability
Note
Specimen Collection and Preparation
Test Procedure and Interpretation of Results
Negative test result
Positive Test results
Remarks
RAPID TEST FOR SIMULTANEOUS/DIFFERENTIAL DETECTION OF TOTAL ANTIBODIES TO HIV-1 AND HIV-2 IN HUMAN SERUM/PLASMA Retroscreen® Courtesy: Tulip Group of Companies
Summary and Explanation
Principle of the Assay
Kit Components
Storage and Stability
Material Required but not Provided
Sample Collection
Precautions
Test Procedure
Interpretation of Results
Limitations
ENZYME LINKED IMMUNOSORBENT ASSAY (ELISA) FOR THE DETECTION OF ANTIBODIES TO HIV 1 AND 2 IN HUMAN SERUM OR PLASMA Qualisa HIV 1 and 2® Courtesy: Tulip Group of Companies
Summary and Explanation
Principle of the Assay
Kit Components
Storage and Stability
Material Required but not Provided
Sample Collection
Precautions
Reagent Preparation
Test Procedure
Run Criteria
Calculations
Example:
Interpretation of Results
Remarks
THIRD GENERATION DOUBLE ANTIGEN SANDWICH ENZYME LINKED IMMUNOSORBENT ASSAY (ELISA) FOR THE DETECTION OF TOTAL ANTIBODIES TO HIV-1 AND HIV-2 INCLUDING HIV-1 GROUP “O” IN HUMAN SERUM OR PLASMA Retrolisa 3.0® Courtesy: Tulip Group of Companies
Summary and Explanation
Principle of the Assay
Kit Components
Storage and Stability
Material Required But not Provided
Sample Collection
Precautions
Reagent Preparation
Test Procedure
Run Criteria
Calculations
Example:
Note
Interpretation of Results
Remarks
TUBERCULOSIS
MYCOBACTERIUM TUBERCULOSIS
Microbiology
Classification
Pathogenesis
Immune Response
Serological Response
Virulence Factors
Clinical Manifestations
Clinical Manifestation of Pulmonary TB
TB Infection and Disease –Differentiation
Diagnosis
Tuberculous Skin Testing
Pitfalls of Laborartory Diagnosis
Importance of Serological Diagnosis
Treatment
RAPID TEST FOR DETECTION OF ANTIBODIES TO MYCOBACTERIUM TUBERCULOSIS(DEVICE) Serocheck-MTB® Courtesy: Tulip Group of Companies
Summary
Principle
Reagents and Materials Supplied
Storage and Stability
Note
Specimen Collection and Preparation
Testing Procedure and Interpretation of Results
Negative for antibodies to Mycobacterium tuberculosis
Positive for antibodies to Mycobacterium tuberculosis
Limitations of the Test
TB IgG, IgA, IgM Ab, Mfd. ANDA Courtesy: Lilac Medicare
Serodiagnosis of Mycobacterial Infections
Principle of the Method
Reagents
A. For IgA tests
B. For IgG tests
C. For IgM tests
Material Required but not Provided
Specimen Collection and Preparation
Precautions of Use
Preparation of the Reagents
Preparation of Diluted TMB solution
Test Procedure
A. For the IgA tests
B. For the IgG Tests
C. For the IgM tests
Summary of the Procedure
Incubate 1 hour at 37°C
Incubate 30 Minutes at 37°C
Incubate 15-25 minutes at 37°C for IgM
Determination of Results
A. IgA and IgG tests
B. IgM Tests
C. Limits of the Methods
D. Specificity
E. Sensitivity
‘Interpretation of the Results
A. Cut off
IgM
B. Healthy People
C. Tuberculous States
D. HIV Cases
E. IgA Antibodies
F. Interpretations of Serological Results
TUMOR MARKERS
Definitions of Terms
Tumor
Neoplasm
Cancer
Metastasis
Benign Tumor
Malignant Tumor
Tumor Marker
Features of Tumor Marker
What are the Clinical Applications of Tumor Markers?
Monitoring Treatment
Detection of Recurrence
Prognosis
Diagnosis
Diagnostically Important Tumor markers
What are the Factors that Affect Tumor Marker Diagnosis?
Specificity
Multiple Epitopes: Epitopes are Antibody Binding Sites on the Antigen
Hook Effect
Serum Half Life of Tumor Marker
Use of Polyclonal Antibodies
Sensitivity
New Concepts in Tumor Marker Diagnosis
Multiple Marker Testing (MMT)
Use of Monoclonal Antibodies
Ultra Sensitive Assay Technology
Short Notes on Different Tumor Markers
PSA (Prostate Specific Antigen)
Issues of PSA Diagnosis
What are the limitations of PSA testing?
Role of FREE PSA
New Concepts in Prostate Cancer Diagnosis
Advantages of PSA Ratio Testing
Cancer Antigens
CA 125
CA 15-3
CA 242
hCG
Strategies of hCG Assays
Before Selecting an hCG Assay, it is of utmost importance to check;
TUMOUR MARKERS
Alpha-Fetoprotein (AFP) ELISA
Summary and Explanation of the Test
Interpretation
Expected Ranges of Values
ALPHA-FETOPROTEIN (AFP) Chemiluminescence Immunoassay Courtesy: Lilac Medicare
Intended Use
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Reagents
Materials Provided
A. Alpha-Fetoprotein(AFP)—1ml/vial
B. Enzyme Conjugate and Biotinylated Monoclonal antibody —13 ml/vial
C. Streptavidin Coated Microplate—96 wells
D. Wash Concentrate – 20 ml
E. Substrate A—7ml/vial
F. Substrate B—7ml/vial
Precautions
For In Vitro Diagnostic Use Not for Internal or External Use in Humans or Animals
Specimen Collection and Preparation
Reagent Preparation
Wash Buffer
2. Working Substrate Solution
Test Procedure
Quality Control
Results
Q.C. Parameters
In order for the assay results to be considered valid the following criteria should be met:
B. Interpretation
Limitations of Procedure
A. Assay Performance
Expected Ranges of Values
Reference Values
Increased
Decreased
CA 15-3 (Carcinogenic Antigen 15-3) Courtesy: Lilac Medicare
Summary and Explanation of the Assay
Expected Values
Increased
Decreased
CA 19-9 (CARBOHYDRATE AG 19-9, GICAM GASTROINTESTINAL CANCER ANTIGEN) BLOOD Mfd: Can Ag, Courtesy: Lilac Medicare
Expected Values
Reference Values
Usage
Increased in
CA242 Mfd: Can Ag, Courtesy: Lilac Medicare
Reference Value
CA 50 (Carbohydrate Antigen 50)
Increased
Decreased
CA 125 (CANCER ANTIGEN 125) Mfd: Monobind, Courtesy: Lilac Medicare
Summary and Explanation of the Test
Expected Ranges of Values
CARCINOEMBRYONIC ANTIGEN (CEA) Mfd: Monobind, Courtesy: Lilac Medicare
Expected Ranges of Values
Increased
Decreased
PROSTATE-SPECIFIC ANTIGEN (PSA) TOTAL PROSTATE SPECIFIC ANTIGEN (TPSA) ELISA, Mfd: Monobind, Courtesy: Lilac Medicare
Interpretation
Expected Ranges of Values
Usage
Increased
PROSTATIC ACID PHOSPHATES (PAP), BLOOD Method: Biochemical Analysis
Increased
Decreased
Description
SERUM FERRITIN
Structure of Ferritin
What is Apoferritin?
Functions
Measurement
Variation in Disease
Low Serum Ferritin
High Serum Ferritin
Reference Range of Ferritin
Protocol for the Use of Serum Ferritin
Recommendation 1
Recommendation 2
Follow-up of Patients Treated with Iron
Rationale
Ferritin Diagnosis
Hook Effect
ELISA TOUBLE SHOOTING ASPECTS
Introduction
Problem: High Negative Control Value or High Background
Problem: Low Positive Control Value or Low Absorbance
Problem: Entire Plate gives Positive OD or Colour All Over Plate
Problem: False Positive Reactions
Problem: Poor Reproducibility or Bad Duplication
Problem: Poor Sensitivity
Problem: High Absorbance of Calibrator
Problem: Specimen Absorbance Out of Range of Calibrators
Problem: Overall Low Absorbance
Problem: Controls Out of Range
Problem: Strips Slip from Holder
Problem: Strips do not Fit in Holder
Problem: Substrate A is Blue
Problem: Substrates A and B Turn Blue when Mixed
Problem: Stop Solution Yellow
Problem: Waited Over 30 minutes Before Measuring Plate
Problem: No Colour Even After 30 minutes Incubation with Substrate
Problem: Colour Develops Very Quickly
Problem: Colour Develops too Slowly
Technical Tips
Washing
Normal Washing
Strip/Plate Washers
Washing Tips
Pipetting Tips
Microplates
Substrate Preparation
Conjugates
Addition of Samples
Stopping Reagents
Temperature
Rotation of Plates While Incubating Reagents
Laboratory Conditions
23:
Diagnostic Immunology Non Enzymatic, Quantitative Techniques (Immunodiffusion, Electrophoresis and Turbidimetry)
QUALITATIVE DETERMINATION OF PLASMA PROTEINS BY IMMUNOPRECIPITATION
Immunodiffusion Method of Oudin
Double Diffusion Method of Ouchterlony
Grabar and Williams's Method of Immunoelectrophoresis
Methodology
Double Diffusion of Ouchterlony
Macrotechnique
Reagents
Preparation of Agar Gel Slides
Gel Diffusion Procedure
Microtechnique
Recording of Results
Possible Sources of Error
Immunoelectrophoresis
Reagents and Equipment
Agar
Buffer
Antisera
Preparation of Agar Gel Slides
Application of Antigens
Electrophoresis
Application of Antiserum
Possible Sources of Errors
Fixation of Precipitin Patterns
Protein Stains
Lipoprotein Stains
Peroxidase Reaction (for haptoglobin and haemopexin)
Ceruloplasmin Stain
Cholinesterase Stain
Lipid-Protein Double Staining
Identification and Interpretation of Precipitin Lines
Practical Application of Immunoelectrophoresis
Quantitative Determination of Plasma Proteins by Immunoprecipitation
FUNDAMENTAL QUANTITATIVE CONSIDERATIONS
Photometric Method
Single Linear Immunodiffusion of Oudin
Single Radial Immunodiffusion
Electroimmunodiffusion
Single Radial Immunodiffusion
Equipment
Procedure
TUBIDIMETRY
Introduction
1. Detection
2. Quantification
3. Monitoring
4. Prognosis
Immunoassays
Qualitative Immunoassays
Quantitative Immunoassays
Heterogeneous Immunoassays
Homogeneous Immunoassays
Spectrophotometry
Beer's Law
Lambert's Law
Beer-Lambert Law
Measuring Principles in Biochemistry
Criteria for Wavelength Selection
Complementary Filters for Measuring Colour Complexes
Reading Methods
1. Equilibrium Methods
2. Kinetic Methods
Standarisation of Time Interval for Rate Reactions
Curve A
Curve B
Curve C
Measurement of Immune Complexes by Spectrophotometry
Selection of Wavelength for Measuring Immune Complexes
Turbidimetry vs Nephelometry
Considerations for Measurements of Turbidimetric Immunoassays (TIA)
The Antibody Excess Zone
Zone of Equivalence
The Antigen Excess Zone
Optimisation, Standardisation and Quality Control of Turbidimetric Assays
Ionic Strength
pH
Temperature
Enhancers
Interference
Characteristics of Antibody used as a Reagent
Standarisation and Calibration
Quality Control
Reading Principles in Turbidimetry
Real Sample Blanking
lmmediate Mixed Blanking
Reaction Kinetics and its Effect on Blanking
Concepts of Assay Optimisation
Detection Limit
Measuring Range
Security Range
Reagent Optimisation
Standard Curve
Instrumentation for Turbidimetry
Aspiration Mode
Cuvette Mode
Classification of Analysers
Semiautomated Analysers
Automated Analysers
Centrifugal Analysers
Static Instruments
TURBIDIMETRIC IMMUNOASSAY FOR DETERMINATION OF RHEUMATOID FACTORS Quantia RF® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of RF Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
C–REACTIVE PROTEIN
CRP Measurements Help in Diagnosis and Management of
Role of CRP in Differential Diagnosis
TURBIDIMETRIC IMMUNOASSAY FOR DETERMINATION OF C-REACTIVE PROTEIN, Quantia CRP® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of CRP Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test procedure for specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY'FOR ULTRASENSITIVE DETERMINATION OF C-REACTIVE PROTEIN Quantia CRP-US® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of CRP US Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Males
Females
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR DETERMINATION OF ANTISTREPTOLYSIN ‘O’ IN HUMAN SERUM Quantia ASO® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of ASO Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
MICROALBUMINURIA
Stages of Diabetic Nephropathy and Characteristic Findings
Classification and Cut off Limits of Albuminuria
Albumin as a Marker Protein of Diabetic Nephropathy
Mircoalbuminuria in Conjuction with Generalized Vascular Sclerosis and Hypertension
Indications for Testing Microalbuminuria
Diabetic Subjects
Methods Available for Determining Microalbuminuria
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR DETERMINATION OF MICROALBUMINURIA Quantia MA® Courtesy: Tulip Group of Companies
Summary
Reagents
Storage and Stability
Principle
Note
Sample Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of MA Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
IMMUNOGLOBULINS (IG)
(Immunoglobulins IgG, IgM and IgA)
Ig Classes
Ig Structure
Immunoglobulin G (IgG)
Immunoglobulin M (IgM)
Immunoglobulin A (IgA)
Serum Immunoglobulin Changes in Various Diseases
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF IMMUNOGLOBULIN IgA IN HUMAN SERUM Quantia IgA® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of IgA Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF IMMUNOGLOBULIN IgG IN HUMAN SERUM Quantia IgG® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of IgG Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF IMMUNOGLOBULIN IgM IN HUMAN SERUM Quantia IgM® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of IgM Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF COMPLEMENT C3 IN HUMAN SERUM Quantia C3® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of C3 Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF COMPLEMENT C4 IN HUMAN SERUM Quantia C4® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of C4 Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF ANTITHROMBIN III IN HUMAN SERUM Quantia AT III® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of AT III Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
QUANTITATIVE IMMUNOTURBIDIMETRIC ASSAY FOR ESTIMATION OF FIBRINOGEN Quantia Fibrinogen® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen collection and preparation
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of Fibrinogen Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
MYOCARDIAL INFARCTION
Introduction
Triaging of Patients with or without AMI
Triaging of Patients with Chest Pain
Importance of Accurate Triaging
Role of Cardiac Markers
Cardiac Markers
Creatine Kinase (CK)/Creatine Kinase MB (CK-MB) Activity
CK-MB Isoforms
CK-MB mass
CK-MB Immunoinhibition Method
Common Limitations of CK-MB Assays
Lactate Dehydrogenase
Myoglobin
Typical Characteristics of Cardiac Markers
Average Diagnostic Sensitivities (%) of Cardiac Markers During Early Phase of AMI
Cardiac Troponins (cTn)-emerging Cardiac Marker of Choice
Role of Troponins in Muscle Contraction
Types of Cardiac Troponins
Characteristics of Cardiac Troponin (I and T) in AMI
Graphical Representation-Levels of Cardiac Markers in AMI
Cardiac Troponins (cTnl and cTnT)- Sensitivity and Specificity
Various studies indicate that:
cTnl versus cTnT
cTnl-Cut off Levels
Graphical Representation – Two Decision Cut off Limits of cTnl
Applications of cTnl test
Superior Diagnostic Efficacy of cTnl Over CK-MB in Detecting Microinfarcts
Protocol For Use of Cardiac Troponin I Test
INTERPRETATION OF LIPID AND NON LIPID MARKERS IN CARDIOVASCULAR DISEASE (CVD)
Introduction
Testing for CRP-US
Leukocyte Count
Testing Homocysteine Levels
Testing Brain Natriuretic Peptide
Beyond the Traditional Lipid Panel
TURBIDEMETRIC IMMUNOASSAY FOR ESTIMATION OF LIPOPROTEIN (A) IN HUMAN SERUM Quantia LP (a)® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Prepration
Additional Material Required
Test Procedure
Assay conditions:
Method for Preparation of AT III Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection limit/Analytical sensitivity
Prozone Limit
Interference
Reference Values
Remarks
QUANTITATIVE TURBIDIMETRIC IMMUNOASSAY FOR ESTIMATION OF APOLIPOPROTEIN A-I Quantia Apo A-I® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Prepration
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of Apo A-I Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference values
Remarks
QUANTITATIVE TURBIDIEMETRIC IMMUNOASSAY FOR ESTIMATION OF APOLIPOPROTEIN B Quantia Apo B® Courtesy: Tulip Group of Companies
Summary
Reagent
Reagent Storage and Stability
Principle
Note
Specimen Collection and Prepration
Additional Material Required
Test Procedure
Assay Conditions
Method for Preparation of apo A-I Calibration Curve
Test Procedure for Preparation of Calibration Curve
Test Procedure for Specimen
Validation Criteria
Calculations
Specific Performance Characteristics
Measuring Range
Detection Limit/Analytical Sensitivity
Prozone Limit
Interference
Reference Values
Remarks
AUTOMATION IN TURBIDIMETRY
Quantimate Turbidimetry Analyser (Fig. 23.17)
Optimised Measuring System
Instrument Specifications
TROUBLESHOOTINGS
Immunoturbidimetry Tests
For Product Range
Problem: Testing Errors
Problem: Errors in Real Sample Blanking and Immediate Mixed Blanking Methods
24:
The Endocrine System
INTRODUCTION
PITUITARY GLAND
Anterior Pituitary (Adenohypophysis)
Hormones Secreted by the Pituitary Gland
Causes of Hypopituitarism Resulting in Multiple or Single Deficiencies
Intrinsic Pituitary Disease
Extrinsic Pituitary Disorders
ANTERIOR LOBE
GROWTH HORMONE (GH)
Actions
Clinical Disorders
METHOD OF EVALUATION: STREPTAVIDIN BIOTIN ELISA
Expected Ranges of Values
GROWTH HORMONE (hGH) Chemiluminescence Immunoassay Courtsey: Lilac Medicare
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Reagents
Materials Provided
Additional Materials [Not Provided]
Precautions
Specimen Collection and Preparation
Reagent Preparation
1. Wash Buffer
Working Substrate Solution
Test Procedure
Quality Control
Results (Fig. 24.3)
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Clinical Condition
Deficiency
Excess
In Brief
Clinical Disorders
Interfering Factors
CORTICOTROPHIN (ACTH)
Actions
Methods of Evaluation
Clinical Disorders
OTHER ANTERIOR PITUITARY HORMONES TSH
FSH
LH
LH, FSH—Recommendations for Testing
PROLACTIN
Prolactin—Recommendations for Testing
INTERMEDIATE LOBE (PARS INTERMEDIA)
POSTERIOR PITUITARY (NEUROHYPOPHYSIS)
ADH
Normal Values
Clinical Disorders
Methods of Evaluation
Deficiency
1. Water restriction
2. Hypertonic saline test (Carter-Robbins test, Hickey-Hare test)
3. Response to vasopressin
4. Nicotine Stimulation
Syndrome of Inappropriate ADH Secretion (SIADH)
OXYTOCIN
FEEDBACK MECHANISM
DISORDERS OF THE PITUITARY SYSTEM
1. TSH Disorders
2. Prolactin Disorders
3. Gonadotrophin Disorders
4. Growth Hormone Disorders
HYPOTHALAMUS
ADRENAL (SUPRARENAL) GLAND
MINERALOCORTICOIDS
Clinical Relevance
GLUCOCORTICOIDS
Cortisol
Plasma Cortisol
Normal Values
Cortisol Levels are Increased in
Cortisol Levels are Decreased in
Interfering Factors
Cortisol Suppression (Dexamethasone Suppression)
Test Significance
Method
Clinical Relevance
Cortisol Stimulation (Cortrosyn Stimulation)
Test Significance
Method
Clinical Relevance
Tests for Adrenocortical Insufficiency
Water Excretion Test (Soffer)
Interpretation
Corticotrophin (ACTH) Response test (Thorn test)
Method
Interpretation
Adrenocortical Inhibition Test
1. Test with dexamethasone
2. Rapid dexamethasone test
3. Tests with metyrapone (an endogenous ACTH test)
Method
Cortisol Abnormalities
Excess
Deficiency
Congenital adrenal hyperplasia
ADRENAL MEDULLA
Clinical Disorders
Deficiency
Excess
THYROID
Markers of the Gland
Role of Carrier Protein
Thyroxine-binding Globulin (TBG) Test
Free Hormones
Free T3 and Free T4 are the “Physiologically active hormones”
Feedback Mechanism
Neonatal Thyroxine
Anti-TPO (Thyroid Peroxidase Antibodies)
Clinical Application
Anti-Tg (Anti-Thyroglobulin Antibodies)
LATS (Long-Acting Thyroid Stimulator)
Clinical Significance
Disorders of the Gland
Hypothyroid
Hyperthyroid
Nonthyroidal Illness (NTI)
Clinical Manifestations
Tests for Thyroid Function
Generally recommended in
Different Markers of Thyroid Function are Tested in Combination for Assessment of Thyroid Status
Information to be Taken before Sample Collection
FT3, FT4—Recommendations for Testing
Free Thyroxine Index (FTI)
Thus: FT4 Index = T4 (total)× T3UR
T3 Uptake Ratio (T3UR) (An Index of the Unsaturated Thyroxine-binding Globulin Fraction of Serum)
Clinical Significance
Pregnancy
High or Low-T4 in a Euthyroid Individual
A Normal T3 in a Hypothyroid Patient
Thyroid Function Tests
Introduction
Tests for Thyroid Function
Binding Proteins
Importance of Free T4 and Free T3
Alterations in the Concentrations or Affinity of Thyroid Hormone-Binding-Proteins (Fig. 24.7)
Increases in
Decreases in
The TSH-Free T4 Relationship
Problems in the Interpretation of Thyroid Function Tests
Common Causes of TSH/FT4/FT3 Discrepancies
Effects of Drugs on Thyroid Function
Drugs that Affect Results of Thyroid Function Tests
Relationship Between Serum Total T4 and Total T3 Concentrations in Various Disorders
Relationship Between Serum FT4, FT3 and TSH Concentrations in Various Disorders
Free T4 and Free T3 in Various Disease Conditions
1. Hyperthyroidism
2. Nonthyroidal Illness
3. Hypothyroidism
Assay Choice Application
Screening and Case Finding
Untreated Patients
Assessment of the Response to Treatment
Difficult Diagnostic Situations
Thyroid Diagnosis and Treatment
Recommendations for Thyroid Testing
Diagnostic Approach to Anomalous Serum T3, T4, and TSH Values
Typical Reference Ranges for Serum Thyroid Hormones and TSH in Humans*
CALCITONIN
Clinical Relevance
Procedure
Interfering Factors
PARATHYROID
Hyperparathyroidism
Hypoparathyroidism
Actions
Clinical Disorders
Methods of Evaluation
Serum Calcium
Tubular Reabsorption of Phosphate (TRP)
Calcium Infusion Test
Ellsworth-Howard Test
Serum Parathyroid Hormone
PARATHYROID HORMONE (INTACT) ELISA Courtesy: MD Biosciences
Intended Use
Summary and Explanation
Clinical Significance
Principle of the Test
Material and Equipment Required but not Provided
Warnings and Precautions for Users
Sample Collection and Storage
Reagent Preparation and Storage
Assay Procedure
Procedural Notes
Calculation of Results
Manual Method
Automated Method
Quality Control
Limitations of the Procedure
Expected Values
Performance Characteristics
Accuracy
Sensitivity
Specificity and Cross-Reactivity
Parathyroid Hormone Assay, Parathyrin; Parathormone (PTH-C Terminal)
Parathyroid Hormone Assay, PIH-N Terminal
Test Significance
Clinical Relevance
Interfering Factors
PANCREAS
Insulin
Functions of Insulin
Clinical relevance of C-peptide
Anti-Insulin Antibodies
Against Endogenous Insulin
Against Exogenous Insulin
TESTES
Androgen Abnormalities
Androgen Excess
Males
Females
Androgen Deficiency
Males
Females
OVARY
Synthesis
Oestrogen Abnormalities
Excess
Deficiency
Progesterone Abnormalities
Excess
Deficiency
PINEAL GLAND
HORMONES AND FERTILITY
MALE FERTILITY
The Four Factors of Male Fertility
Pretesticular Function (Hormones)
Testicular Function
Post-testicular Function
Ejaculatory Disturbance, Impotence, and Sexual Problems
Problems Associated with Male Infertility
The Male Hormone System
The Hypothalamus and Pituitary Start the Action
Feedback Hormones from Testicles
Where Can Things Go Wrong?
Fertility Factor: The Hormone Balancing Act
An Overview of Hormonal Treatment
Diagnosing and Beating Specific Hormonal Problems
Hyperprolactinaemia
Hypothyroidism
Congenital Adrenal Hyperplasia
Hypogonadotrophic Hypopituitarism
Panhypopituitarism
Kallmann's Syndrome
Delayed Puberty
Fertile Eunuch
Fertility Factor 2 Treating Unresponsive Testicles
What Causes Testicular Failure?
Varicocoele
Cryptorchidism
Infection
Torsion
Klinefelter's Syndrome
Cushing's Syndrome
Germ Cell Aplasia (Sertoli Cell Only)
Testicular Enzyme Defects
FEMALE FERTILITY
The Five Female Fertility Factors
Fertility Factor—1: Ovulation
Fertility Factor—2: Sperm-Mucus Interaction
Fertility Factor—3: Fertilisation
Fertility Factor—4: Tubal Factor
Fertility Factor—5: Embryo Implantation
Female Hormone System
What is Ovulation?
What makes One have a Period?
Clues from the Menstrual History
The Three Types of Menstrual Patterns
The Regular Menstrual Period
Irregular Menstrual Periods or Amenorrhea for Six or More Months
Nonexistence of the Menstrual Period
Clues from Physical Examination
The Physical Examination
Diagnostic Approaches for Irregular Menstrual Periods or Amenorrhea
Pregnancy Test
Progesterone Withdrawal Test
Positive Response to Progesterone Withdrawal
Negative Response to Progesterone Withdrawal
Positive Withdrawal to Oestrogen/Progesterone Stimulation
Detecting Ovarian Failure
Diagnosing Anovulation
Symptoms of Anovulation
Tests Used to Determine the Cause of Anovulation
Hormonal Tests for Diagnosing the Cause of Anovulation
Prolactin Pituitary Hormone
Thyroid Hormone
FSH and LH Pituitary Hormones
Adrenal Androgens (DHEAS and Testosterone)
Conditions that can Interfere with Ovulation and Menstruation
Practical Evaluation of Hormonal Status
ALGORITHM FOR EVALUATING AMENORRHOEA (Figs 24.16 to 24.22)
IMMUNOASSAYS FOR LH, FSH AND PRL
Sensitivity
Detection Limits of Various Immunoassays
Conditions in which LH/FSH levels can go below 2.0 mIU/ ml
Streptavidin-biotin Assay System
Calibrator Matrix
WHO Std. Reference
Cross Reaction
Monoclonal Capture
Normal Ranges
Sample Collection and Storage
LH and FSH
Prolactin
Hyperprolactinemia
Causes for Hyperprolactinemia
Symptoms of Hyperprolactinemia
Diagnosis
Treatment
ADRENAL CORTEX
Actions
Clinical Disorders of Adrenal Steroids
Methods of Evaluation of Glucocorticoids and Androgens
Urinary 17-Hydroxycorticosteroids, 17-Ketosteroid Excretion, Ketogenic Steroids, or Free Cortisol
Method
Interpretation
Aldosterone
Aldosterone, Serum and Urine
Normal values
Method
Test Significance
Clinical Relevance
Interfering Factors
Clinical Disorders of Mineralocorticoids
Primary Hyperaldosteronism
Secondary Hyperaldosteronism
Islolated Hypoaldosteronism
ADRENAL MEDULLA
Catecholamines, Plasma
Normal Values
Catecholamines, Urine
Normal Values
Actions
Clinical Disorders
Deficiency
Excess
Method of Evaluation
Histamine Provocative Test
Phentolamine Blocking Test
TESTES
Actions
Clinical Disorders
Deficiency
Excess
Methods of Evaluation
Physical Examination
Gonadotropin Stimulation test
Testosterone, Free, Blood
Normal values
Increased
Decreased
Description
Testosterone, Total, Blood
Normal values
Increased
Decreased
Description
Interfering Factors
STEROIDS
OSTERIOL
Reference Values
Oestriol Values are Increased in
Oestriol Values are Decreased in
17-β-OESTRADIOL
Reference Values
Estradiol is Increased in
Estradiol is Decreased in
DHEA-S (DEHYDROEPIANDROSTERONE SULFATE)
Reference Values
Values are Increased in
Values are Decreased in
Δ4-ANDROSTENEDIONE
Reference Values
PROGESTERONE
Normal Values (Units- ng/ml)
Values are Increased in
Values are Decreased in
17αOH PROGESTERONE
Reference Values
TOTAL TRIIODOTHYRONINE (T3)
Expected Values for the T3 EIA Test System
Interpretation of Total T3 in ng/ml
Free Triiodothyronine (FT3)
Interpretation
Expected Ranges of Values
Expected Values for the Free T3 EIA Test System (in pg/ ml)
T-Uptake
Interpretation
Expected Ranges of Values
Expected Values for the T-uptake EIA test system
Total Thyroxine (T4)
Interpretation
Expected Range of Values
Normal Values (μg/dl)
Free Thyroxine (FT4)
Interpretation
Expected Range of Values
Thyrotropin (TSH)
Interpretation
Expected Ranges of Values
Normal Values (μIU/ ml)
Example of Chemiluminescence Immunoassay Method—TSH Estimation
THYROTROPIN (TSH) (Chemiluminescence Immunoassay) Courtesy: Lilac Medicare
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Materials Provided for 96-well Microplate
Thyrotropin Calibrators — 1.0 ml/vial
TSH -Tracer—10 ml/vial
Streptavidin Coated Microplate — 96 wells
Wash Solution Concentrate – 20 ml
Signal Reagent A —7.0 ml/vial
Signal Reagent B — 7.0 ml/vial
Materials [Required But Not Provided]
Precautions
Specimen Collection and Preparation
Reagent Preparation
1. Wash Buffer
2. Working Signal Reagent Solution – Prepare daily
Test Procedure
Quality Control
Results
QC Parameters
Limitations of Procedure
A. Assay Performance
B. Interpretation
Expected Ranges of Values
Thyroglobulin Antibodies
Interpretation
Expected Range of Values
Thyroid Peroxidase Antibodies
Interpretation
Expected Range of Values
Luteinising Hormone (LH)
Interpretation
Expected Range of Values
Usage
Values are Increased in
Values are Decreased in
Follicle Stimulating Hormone (FSH)
Interpretation
Normal Values in mIU/ml
Values are Increased in
Values are Decreased in
Prolactin Hormone (PRL)
Interpretation
Expected Range of Values
HPRL Levels are Increased in
HPRL Levels are Decreased in
Chorionic Gonadotrophin (hCG)
Interpretation
Normal Values in mIU/ml
Values are Increased in
Values are Decreased in Abortion and Ectopic Pregnancy
Factors that Affect Results
Other Data
CIA™ INSULIN (Chemiluminescence Immunoassay) Courtesy: Lilac Medicare
Insulin Microplate CIA
Summary and Explanation of the Test
Principle
Immunoenzymometric Assay
Precautions
Specimen Collection and Preparation
Reagents and Materials Provided
Insulin Calibrators – 2.0 ml/vial (Dried)
Enzyme-Insulin antibody conjugate and Biotinylated monoclonal antibody −13 ml/vial
Streptavidin Coated Microplate — 96 wells
Wash Solution Concentrate – 20 ml
Substrate A —7.0 ml/vial
Substrate B — 7.0 ml/vial
Required But Not Provided
Reagent Preparation and Storage
Wash Buffer
Working Substrate Solution
Test Procedure
Quality Control
Calculation of Results
Quality Control
Limitations of Procedure
Expected Values
C-Peptide
Expected Values
Anti-insulin
Clinical Relevance
Indications
Normal Values
25:
Graphs
PLOTTING POINTS ON A GRAPH
Fixing the Scale on a Graph (Figs 25.7 and 25.8)
Plotting a Point with an Example (Figs 25.9 to 25.11)
Plotting a Curve / Line on a Graph (Figs 25.13 and 25.14)
Extrapolating Values from the Graph (Fig. 25.15)
Linear and Non-linear Curves
Exercise 2 (Asnwer at the end of the chapter)
Properties of a Graph
Importance of Slope and Intercept
What is Slope?
Calculating the Slope
Slope of a non-linear curve
Intercept
Calibration
How important is it to plot a curve using all the given set of calibrators ?
Shift in the curve due to change in slope
Shift in the curve due to change in the intercept
Exercise 3 (Asnwers at the end of the chapter)
Different Types of Graphs Based on Transformation of Axis
Logarithmic Scale
Log Cycles
One Cycle Semi-log Graph
2. Cycle Semi-log Graph
3. Cycle Semi-log graph
4. Cycle Semi-log graph
Log-Log graphs
Plotting points on a log scale (Fig. 25.35)
Plotting “0” on a log scale
Exercise 4 (Answer at the end of the chapter)
Ligit Scale
1. Cycle Logit-log Graph
3. Cycle Logit-log graph (Fig. 25.37)
Exercise 5 (Answer at the end of the chapter)
Linear Graph Model
Semi-log Graph Model (Fig. 25.38)
Log-log Graph Model (Fig. 25.40)
Logit-log Graph Model (Fig. 25.41)
ANSWER TO EXERCISES
Exercise 1
Exercise 2
Graph 1
Graph 2
Graph 3
Exercise 3
Exercise 4
Exercise 5 (Fig. 25.48)
Logit-log graph for Exercise 5
Glossary
Recapitulation
Non Linear Multi Point Assays
Non-linear Curves
Importance of Slope and Intercept
Shirt of the Curve due to Change in Slope (Fig. 25.52)
Shift in the Curve Due to Change in the Intercept (Fig. 25.53)
26:
Histopathology
PREPARATION OF TISSUES
Fixation
Decalcification
Nitric Acid Method
Formic Acid Sodium Citrate Method
Electrolytic Method
Processing of Tissues
Method I
Method II
Method III
Preparation of Sections
Cutting Sections
Attaching Sections to Slides
Mayer's Egg Albumin
Egg Adhesive from Dried Albumin
Technique for Frozen Sections
Staining
Mounting
Removal of Pigments and Precipitates
Mercury Precipitate
Formalin Produced Precipitate
Method I
Note
Method II
Melanin Pigment
Malarial Pigment
Method I
Method II
Method III
Routine Staining Procedures
Commonly Employed Haematoxylins
Harris's Alum Haematoxylin
Mayer's Haematoxylin
Counterstains for Haematoxylin Stains
Stock 1% Aqueous Eosin Solution
Stock 1% Alcoholic Eosin Solution
Working Eosin Solution
Routine Haematoxylin and Eosin Stain
Technique:
Solution
Staining Procedure
Special Stains
Stains for Connective Tissue
a. Mallory's Phosphotungstic Acid Haematoxylin Stain
b. Mallory's Phosphomolybdic Acid Haematoxylin stain
c. Heidenhain's Iron Haematoxylin Stain
d. Mallory's Aniline Blue Collagen Stain
e. Lee-Brown's Modification of Mallory's Aniline Blue Stain
f. Van Gieson's Stain for Collagen Fibres
h. Barbeito—Lobez' Trichrome Stain
i. Gomori's One-Step Trichrome Stain
j. Heidenhain's Aniline Blue Stain
k. Gallego's Iron Fuchsin Stain
l. Weigert's Resorcin Fuchsin Elastic Stain
m. Gomori's Aldehyde Fuchsin Stain
n. Verhoeff's Elastic Stain
o. Wilder's Reticulum Stain
p. Koneff's Stain for Bone and Cartilage
Stains for Cytoplasmic Granules
a. Gomori's Chromaffin Stain
b. Acid Fuchsin Aniline Blue Method for Pituitary Granules
c. Fontana-Masson Stain for Argentaffin Granules
d. Luna's Mast Cell Stain
Stains for Fats and Lipoids
a. Osmium Tetraoxide Stain for Fat
b. Oil Red O Fat Stain
c. Sudan Black B Stain for Fat
Stains for Carbohydrates and Mucoproteins
a. Best's Carmine Stain for Glycogen
b. Periodic Acid-Schiff (PAS) Reaction
c. Mayer's Mucicarmine Stain
d. Alcian Blue
e. Alcian Blue-PAS Stain
f. Crystal Violet Amyloid Stain
g. Bennhold's Congo Red Amyloid Stain
h. Toluidine Blue Metachromasia Stain
Stains for Pigments and Minerals
a. Modification of Mallory's Reaction for Iron
b. Gomori's Iron Reaction
c. von Kossa's Method for Demonstrating Calcium
d. Svain's Bile Pigment Stain
e. De Galantha's Method for Demonstration of Urate Crystals
Stains for Bacteria, Fungi and Inclusion Bodies
a. Kinyoun's Acid-Fast Stain
b. Ziehl-Neelsen Stain for Acid-Fast Bacteria
c. Fite-Faraco Stain for Acid-Fast Bacilli
d. Brown and Brenn Stain for Bacteria in Tissue
e. Levaditi's Method for Staining Spirochetes in Blocks
f. Warthin-Starry Method for Staining Spirochetes
g. Silver Method for Spirochetes and Donovan Bodies
h. Gridley's Stain for Fungi
i. Gomori's Methanamine-Silver Nitrate Technique (Grocott's application to Fungi)
j. Phloxine Toluidine Blue Stain for Malarial Parasites
k. Parson's Stain for Negri Bodies
l. Haematoxylin-Shorr S 3 Stain for Inclusion bodies
m. Giemsa's Stain for Rickettsiae
SOME STAINING TECHNIQUES IN DETAIL
Mallory's Phosphotungstic Acid Haematoxylin Stain: PTAH
Solutions
Phosphotungstic Acid Haematoxylin
Staining Procedure
Results
van Gieson's Stain for Collagen Fibres
Solution
Weigert's Iron Haematoxylin
Solution A
Solution B
Working Solution
van Gieson's Solution
Staining Procedure
Results
Masson's Trichrome Stain
Solutions
Bouin's Solution
Weigert's Iron Haematoxylin
Biebrich Scarlet-Acid Fuchsin Solution
Phosphomolybdic-Phosphotungstic Acid Solution
Aniline Blue Solution
Light Green Solution
1% Acetic Water Solution
Staining Procedure
Results
Verhoff's Elastic Stain
Solutions
Elastic Tissue Stain
Ferric Chloride Solution
Van Gieson's Stain
Sodium Thiosulphate (Hypo) Solution
Staining Procedure
Results
Wilder's Reticulin Stain
Solutions
Phosphomolybdic Acid Solution
Uranium Nitrate Solution
Ammoniacal Silver Solution
Reducing Solution
Gold Chloride Solution
Sodium Thiosulphate (Hypo) Solution
Nuclear Fast Red (Kernechtrot) Stain
Staining Procedure
Results
Fontana-Masson Stain for Argentaffin Granules
Solutions
Silver Nitrate Solution (Fontana)
Gold Chloride Solution
Sodium Thiosulphate Solution
Nuclear Fast Red (Kernechtrot) Solution
Staining Procedure
Results
Oil Red O Fat Stain
Solutions
Oil Red O solution
Glycerin Jelly
Harris's haematoxylin for counterstain
Staining Procedure
Results
Best's Carmine Stain for Glycogen
Solutions
Carmine Stock Solution
Working Solution of Carmine
Differentiating Solution
Staining Procedure
Results
Periodic Acid-Schiff (PAS) Reaction
Solutions
Coleman's Feulgen Reagent
OR
Schiff's Leuco-Fuchsin Solution
Test for Schiff's Leuco-Fuchsin Solution
Normal Hydrochloric Acid Solution
0.2% Light Green counterstain (Stock)
Working Light Green Solution
Diastase Solution
Staining Procedure
Results
Mayer's Mucicarmine Stain
Solutions
Weigert's Iron Haematoxylin
Solution A
Solution B
Working Solution
Metanil Yellow Solution
Mucicarmine Stain
Staining Procedure
Results
Crystal Violet Amyloid Stain
Solutions
Stock Crystal Violet Solution
Working Crystal Violet Solution
Abopon Mounting Medium
Staining Procedure
Results
von Kossa's Method for Demonstrating Calcium
Solutions
5% Silver Nitrate Solution
5% Sodium Thiosulphate Solution
Nuclear Fast Red (Kernechtrot) Stain
Staining Procedure
Results
Ziehl-Neelsen Stain for Acid-Fast Bacteria
Solutions
Carbol Fuchsin solution
1% Acid Alcohol
1% Sulphuric Acid Water
Working Methylene Blue Solution
Staining Procedure
Results
AUTOMATION IN HISTOPATHOLOGY
Hypercentre (Shandon)
Histocentre (Shandon)
2 LE (Shandon)
Duplex (Shandon)
Hypercut (Shandon)
Autosharp 5 (Shandon)
Linistain GLX (Shandon)
Varistain 24 (Shandon)
Varistain 12 (Shandon)
Autoslip (Shandon)
27:
Cytology
28:
Microbiology and Bacteriology
CLASSIFICATION
Protophyta
Schizomycetes (Bacteria and related forms)
Actinomycetales
Eubacteriales
Spirochaetales
Microtatobiotes (The smallest living things)
Virales
Thallophyta
Bacterial Cell Constituents
Capsule
Flagella
Spores
Inclusion Granules
Shape of Bacteria
1. Cocci
2. Bacilli
Bacterial Reproduction
Bacterial Physiology
1. Food
2. Moisture
3. Hydrogen-ion-concentration or pH
4. Oxygen Needs
5. Carbon dioxide
6. Temperature
7. Light
8. Symboisis or mutual beneficial coexistence
Products of Bacterial Growth
1. Bacterial toxins
2. Bacterial enzymes
3. Bacterial pigments
Koch's Postulates
Morphology and Staining Reactions
1. Loeffler's Methylene Blue
Method
2. Dilute Carbolfuchsin
Gram's Stain
Method
Results
Reagents
Ziehl-Neelsen Stain
Method
Results
Troubleshooting (AFB-Staining)
Problem: False Positive Results
Problem: False Negative Results
Modified Ziehl-Neelsen's Stain
Reagents
RAPID TWO STEP COLD AFB STAIN Novachrom® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Specimen Collection and Preparation
Specimen Preparation
Test Procedure
Interpretation of Results
Grading of results
Remarks
Troubleshooting
Problem: False Positive Results
Problem: False Negative Results
Special Stains
Stains for Diphtheria Bacillus
Ponder's Stain
Method
Result
Albert's Stain
Method
Result
Modified Neisser's Method
Neisser's methylene blue
Method
Result
Staining of Capsules
Hiss's Method
Method
Result
India Ink Method
Staining of Spores
Modified Ziehl-Neelsen's Method
Method
Result
Staining of Spirochaetes
Fontana's Method
Method
Result
Staining of Fungi
Lactophenol Cotton Blue
Staining of Flagella
Loeffler's Method
Method
Result
Negative Staining
India Ink method
Motility of Bacteria
Hanging Drop Method
CULTURE
Media
1. Basic Media
2. Enrichment Media
3. Differential and Selective Media
4. Indicator Media
Temperature
Atmosphere
Cultural Characteristics
1. Shape
2. Surface
3. Size
4. Contiguity
5. Consistency
6. Pigmentation
7. Opacity
8. Elevation
9. Media Changes
Biochemical Reactions
1. Sugar Fermentation
2. Other Biochemical Tests
Serology
Preparation of Culture Media
Peptone Water
Nutrient Broth
Nutrient Agar
Blood Agar
Chocolate Agar
Sugar Media
Preparation of Andrade's Indicator
Hiss's Serum Water Sugars
Loeffler's Serum Slopes
Media for Identification of Fungi
Sabouraud's Glucose Agar
READY TO POUR, STERILISED POUCHED MEDIA FOR MICROBIOLOGICAL APPLICATIONS Instaprep Courtesy: Tulip Group of Companies
Summary
Reagent
Nutrient Agar
MacConkey Agar
CLED Agar with Andrade's Indicator
Sabouraud Dextrose Agar
Mueller Hinton Agar
Principle
Storage and Stability
Additional Material Required
Procedure
Interpretation of Results
Remarks
Troubleshooting
Problem: Smooth Gelled Media Not Formed
Media for Growth of Anaerobes
Thioglycollate Medium
Robertson's Cooked Meat Medium
MacConkey's Medium
Lowenstein Jensen Medium
Mineral Salt Solution
Method of Inoculation
Streak Plate Method
Method I
Method II
Method III
Precautionary Measures to be Undertaken in a Microbiology Laboratory
Specimen Collection
Urine
EASYBACT Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Materials Required
Specimen Collection and Preparation
TEST Procedure
Interpretation of Results
Identification of Bacteria
Remarks
Notes
Troubleshooting
Problem: Twisting and Swirling the Media
Problem: Discoloration
Problem: Discrepancy in Results
Feces
Sputum
Throat and Nasal Smears
Pus Swabs
Blood Cultures
CSF, Pleural Fluid and Other Body Fluids
Ear Discharge Cultures
Nonpathogenic
Pathogenic
Eye Cultures
GENERAL INSTRUCTIONS FOR MICROBIOLOGY
Storage of Organisms
Precautions Before and during Testing
Specimen Collection and Preparation
Inoculation of Samples
GRAM-POSITIVE COCCI
Staphylococci
Morphology
Culture
Coagulase Test
1. Slide Test
2. Tube Test
Pathogenicity
Streptococci
Morphology
Alpha-hemolysis
Beta-hemolysis
Gamma-hemolysis
Culture
Pathogenicity
Strep. pyogenes
Strep. viridans
Strep. fecalis
Pneumococci
Morphology
Culture
Other Differences between Pneumococci and Strep. viridans
Pathogenicity
GRAM-NEGATIVE COCCI
Neisseria
N. catarrhalis
Morphology
Culture
N. Meningitidis
Morphology
Culture
N. Gonorrhoea
Morphology
Culture
Comparison of meningococci and gonococci
Veilonella
ANAEROBIC SPORE BEARING BACILLI
Clostridia
Pathogenic clostridia
Clostridium tetani
Morphology
Culture
Laboratory Diagnosis
Toxin Produced
Gas Gangrene Causing Organisms
Clostridium welchii (or C. perfringens)
Morphology
Culture
Toxins produced
Clostridium septicum
Morphology
Culture
Clostridium novyi
Morphology
Culture
Diagnosis of Gangrene
Microscopy
Culture
Clostridium botulinum
Morphology
Culture
Laboratory Diagnosis
AEROBIC SPORE FORMING BACILLI
Bacillus anthracis
Morphology
Culture
Diseases Caused
Laboratory Diagnosis
Bacillus subtilis
Bacillus cereus
GRAM-POSITIVE BACILLI
Corynebacteria
Morphology
Culture
Diseases Caused
Laboratory Diagnosis
Diphtherioid bacilli
Corynebacterium hoffmanni
Corynebacterium xerosis
Corynebacterium acne
MYCOBACTERIA
Strains of Mycobacteria
Morphology
Cultures
Cultural Charactristics
Laboratory Diagnosis
Concentration Methods
Petroff's Method
Oxalic Acid Method
Trisodium Phosphate Method
Other Pathogenic Mycobacteria
M. fortuitum
M. paratuberculosis
M. ulcerans
M. balnei
M. leprae
M. lepraemurium
Non-Pathogenic Species
M. smegmatis
M. butyricum
Anonymous Strains
Animal Inoculation
OVERVIEW OF M. TUBERCULOSIS DIAGNOSTIC APPROACH AFB STAINING, CULTURE AND SENSITIVITY
Introduction
Brief Microbiology
Diagnosis of Mycobacterium tuberculosis infection
Specimen Selection
Sample Concentration and Decontamination
MUCOLYTIC, DISINFECTANT, SPECIMEN PRETREATMENT AND BUFFERING SYSTEM FOR AFB STAINING AND CULTURE Lyfectol® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Specimen Collection
Procedure
Preparation of Mucolytic Reagent
Processing of Specimen
Remarks
Effect of Centrifugal Force on Positive Smears/Cultures for Mycobacteria
Troubleshooting
Problem: False Negative Results in LJ Media
Problem: False Positive Results in LJ Media
Problem: Turbidity in Phosphate Buffer
Problem: No Liquefaction of Mucoid Sputum
The AFB Smear
RAPID TWO STEP COLD AFB STAIN Novachrom® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Specimen Collection and Preparation
CSF
Body fluids
Sputum
Urine
Specimen Preparation
Test Procedure
Interpretation of Results
Grading of Results
Remarks
Quantitation Scale for Acid-Fast Bacillus Smears according to stain used
Factors Influencing Sensitivity and Specificity of AFB Smears
False Positive Results
Acid Fast Particles Other Than Tubercle Bacilli
Food particles
Precipitated stains
Saprophytic acid-fast bacilli
Mycobacterium kansasii or Nocardia species
Spores of Bacillus subtilis
Fibres and pollens
Scratches on the slide
Contamination through the Transfer of Bacilli from One Smear to Another
False Negative Results
Inadequate Sputum Collection
Improper Storage of Sputum Specimens and Stained Smears
Failure to Select Suitable Sputum Particles for Smear Preparation
Inadequate Preparation of Smear or Staining of Slides
Inadequate Examination of the Smear
Other Reasons for False Results
Administrative errors
Reading errors
AFB Culture and Isolation
READY TO USE LJ SOLID MEDIUM FOR MYCOBACTERIUM TUBERCULOSIS ISOLATION Mycocult® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Specimen Collection and Preparation
CSF
Body Fluids
Sputum
Specimen Preparation
Test Procedure
Interpretation of Results
Remarks
Troubleshooting
Problem: Growth on the Slant within First Week of Incubation
Problem: Collapse of Slants
COMBIPACK OF SOLID AND LIQUID MEDIUM FOR MYCOBACTERIUM TUBERCULOSIS ISOLATION Combicult® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Storage and Stability
Additional Material Required
Specimen Collection and Preparation
CSF
Body Fluids
Sputum
Urine
Specimen Preparation
Preparation of Kirchner Medium
Test Procedure
Kirchner Medium
Interpretation of Results
Remarks
Troubleshooting
Problem: Growth on the Slant within First Week of Incubation
Problem: Collapse of Slants
Susceptibility Testing of Mycobacterium tuberculosis
Pattern of Drug Resistance for Mycobacterium tuberculosis
Susceptibility Testing Methodology
Susceptibility Testing of Mycobacteria
Drug Concentrations for Proportion Method Susceptibility Testing using various culture media*
Drug Concentration (μg/ml)
PRIMARY/SECONDARY DRUG CONTAINING LOWENSTEIN-JENSEN MEDIA PANEL MTB SENSITIVITY TESTS Sensicult® Courtesy: Tulip Group of Companies
Summary
Reagent
Contents
Principle
Storage and Stability
Additional Material Required
Inoculum Preparation for Sensitivity Testing
Test Procedure
Interpretation of Results
Remarks
Other Markers
Troubleshooting LB
Problem: Growth not obtained on LJ control slant after diluting the culture suspense to 1:10000 of the Standard 0.5 McFarland turbidity
Problem: Collapse of Slants
IN DETERMINATION OF ADENOSINE DEAMINASE ACTIVITY IN SERUM, PLASMA AND BIOLOGICAL FLUIDS ADA-MTB® Courtesy: Tulip Group of Companies
Summary
Reagent
Principle
Reference Values
Storage and Stability
Note
Additional Material Required
Reagent Preparation
Specimen Collection and Preparation
Test Procedure
Calculations
Linearity
Remarks
Troubleshootings
Problem: False Positive Results
Problem: False Positive Results
Problem: Reagent not working
GRAM-NEGATIVE BACILLI
Achromobacteriacea
Alcaligens fecalis
Enterobacteriaceae
Proteus vulgaris
Escherichia coli
Indole
Methyl Red
Voges-Prokaeur Reaction
Citrate Test
Aerobacter aerogenes
Klebsiella species (Klebsiella pneumoniae)
Morphology
Klebsiella rhinoscleromatis
Klebsiella Ozaene
Paracolon Bacilli
Enteric Fever Bacilli-Typhoid and Paratyphoid
Salmonella typhi
Morphology
Cultures
Salmonella paratyphi A and Salmonella paratyphi B
Pathogenicity
Diagnosis of Enteric Infections
Blood Culture
Feces Culture
Urine Culture
Widal Reaction
Organisms of Bacterial Enteritidis or Food Poisoning
Salmonella enteritidis
Salmonella typhimurium
Diagnosis of Salmonella Food Poisoning
Group of Dysentery Bacilli
Shigella shigae or dysenteriae and Shigella flexneri or paradysenteriae
Morphology
Culture
Brucellaceae
Pasturella pestis
Morphology
Culture
Pasturella tularensis
Morphology
Culture
Bordetella pertussis
Morphology
Culture
Brucella species
Laboratory Diagnosis
Haemophilus
Haemophilus influenzae
Haemophilus aegypticus (Koch-week bacillus)
Haemophilus ducreyi
Donovania granulomatis
Moraxela lacunate (Morax-Axenfeld bacillus)
Pseudomonadaceae
Pseudomonas aeruginosa (Bacillus pyocyaneus)
Morphology
Culture
Bacteriaceae
Fusibacterium fusiforme
Vibrio cholerae
Morphology
Culture
Laboratory Diagnosis
Methods of Examination
Cultural Methods
SPIROCHAETES
Treponema
Treponema pallidum
Primary Stage
Secondary Stage
Tertiary Stage
Morphology
Laboratory Diagnosis of Syphilis
Material Collection
Treponema pertenue
Treponema curateum
Treponema microdentum
Treponema calligyrum
Leptospira
Leptospira icterohemorrhagiae
Laboratory Diagnosis
Cultivation
Borrelia
Borrelia vincenti
Borrelia recurrentis
Borrelia duttonii
Laboratory Diagnosis of Relapsing Fevers
Spirillum minus
GRAM STAINER
APPLICATION OF VARIOUS MICROBIOLOGY RELATED PRODUCTS—MEDIA/REACTIONS/TESTS IN CLINICAL AND NON CLINICAL SETTINGS
Food and Beverage Analysis
Dairy Analysis
Pharmaceutical Analysis
Water and Wastewater Anaylsis
Veterinary Testing
Products for Brewery and Fermentation Analysis
Products for Medical and Research Institutes
Products for Biochemical Tests
Cosmetic Analysis
Colour Atlas—Media and Colonies
QUALITY ASSURANCE IN BACTERIOLOGY
Quality Control of Media and Stains
Quality Control of Media
Sources of Media
Dehydrated Media
Dehydration with Additive
Commercially Prepared Media
Sources of Error
Inappropriate Medium
Water
Weighing
Dispensing
Proper Sterilization
Glassware
Quality Control
Physical Appearance
Sterility
Growth
Biochemical Response
Quality Control of Media
Spectrum of Quality Control
Performance of Plated Media
Quality Control of Stains
Quality Control of Bacteriological Techniques
Quality Control of commonly used media suggested control organisms and expected reactions
Quality Control procedures for commonly used tests
29:
Mycology
SUPERFICIAL MYCOSES AND DERMATOPHYTES
a. Microsporum
b. Trichophyton
c. Epidermophyton
Laboratory Diagnosis
INTERMEDIATE SUPERFICIAL DEEP MYCOSES
Candida albicans (Monilia)
DEEP OR SYSTEMIC MYCOSES
Actinomyces
Laboratory Diagnosis
Nocardia
Cryptococcus neoformans
Laboratory Diagnosis
Histoplasma capsulatum
Laboratory Diagnosis
Coccidioides
Laboratory Diagnosis
FUNGI USUALLY PRESENT AS CONTAMINANTS BUT WHICH RARELY CAUSE DISEASE—USUALLY IN PATIENTS CHRONICALLY ILL FROM OTHER DISEASES
Geotrichum
Penicillium
Aspergillus
Mucor
MYCOLOGICAL METHODS
Collection and Despatch of Specimens
Microscopic Examination
Skin, Nail and Hair
Sputum, Pus and Exudates
Cultural Examination
30:
Diagnostic Skin Tests
TECHNIQUE OF SKIN TESTS
Intracutaneous Injection
Transcutaneous Administration
Patch Tests
IMMUNOLOGIC BASIC FOR SKIN TESTS
Toxin—Antitoxin Neutralisation
Anaphylatic Type of Hypersensitivity (Immediate Reactions)
Tuberculin Type of Hypersensitivity (Delayed Reactions)
COMMON SKIN TESTS
Toxin—Antitoxin Neutralisation Tests
Schick Test
1. Material
2. Technique
3. Interpretation
4. Test for Toxoid Sensitivity
Dick Test
Schültz-Charlton Reaction
Immediate Reaction Type of Skin Tests
Test for Sensitivity to Horse Serum
1. Technique
a. Skin Test
b. Conjunctival Test
2. Unfavourable Reactions following Serum Administration
a. Immediate Anaphylaxis
b. Febrile Reaction
c. Serum Sickness
d. Treatment
3. If the Skin Test is Positive
4. Desensitisation is Done as follows
5. Treatment of Severe Reactions
Direct Skin Tests for Allergens (Respiratory, contact, drug, or food)
1. Technique
2. Interpretation
Prausnitz-Kustner Reactions
1. Technique
2. Interpretation
Penicillin Hypersensitivity
Foshay's Test
Extracts of Parasitic Worms (e.g. Trichinella)
Delayed Reaction Type of Skin Tests
Tuberculin test (Mantoux test, Pirquet Reaction)
1. Test Materials
Approximate Tuberculin Equivalents
2. Technique
3. Reading and interpretation
Candida
Filariasis
Ducrey Test (Ito-Reenstierna test, chancroid skin test, dmelcos test; for the diagnosis of chancroid)
Brucellergen Test (For the diagnosis of brucellosis)
Tularaemia Skin Test
Frei Test (For the diagnosis of lymphogranuloma venereum)
Mumps and Herpes Simplex Tests
Echinococcus Skin Test (Casoni reaction; for the diagnosis of hydatid disease)
Trichinella Skin Test (For the diagnosis for trichinosis)
Coccidioidin Test (For diagnosis of past infection with Coccidioides immitus)
Histoplasmin Test (For the diagnosis of past infection with Histoplasma capsulatum)
Blastomycin Test (For the diagnosis of past infection with Blastomyces)
Kveim-Siltzbach Test (For the diagnosis of sarcoidosis)
Toxoplasma Skin Test
Nonbacterial Regional Lymphadenitis (“Cat Scratch Fever”) Test
31:
Cytogenetics
INTRODUCTION
Cell Division
BLOOD LYMPHOCYTE CULTURE
Chromosome Preparation from Bone Marrow
Chromosome Preparation from Whole Blood Culture
Harvesting of Cultures
Preparation of Chromosome Slide
Cleaning and Preparation of Slides
Procedure of Giemsa Staining
Preparation of Phosphate Buffer Solution
KARYOTYPING
G AND Q BANDINGS
G Banding
Q Banding (Quinacrine Banding Technique)
C Banding Technique
IMPORTANCE OF CHROMOSOMAL STUDIES
Variations in the Chromosome Number
Polyploidy
Aneuploidy
BARR BODY ANALYSIS BUCCAL SMEAR FOR STAINING SEX CHROMATIN MASS
Preparation
Procedure
Postprocedure Care
Client and Family Teaching
Factors that Affect Results
Other Data
Appendices
DRUGS AFFECTING RESULTS OF BLOOD STUDIES, ELECTROLYTES, BLOOD GAS ANALYSES, AND ISOTOPE STUDIES
Drugs Affecting Results of Urine Studies
Drugs that may Affect Colour of Urine
Drugs Affecting Results of Fecal Studies
Drugs Affecting Results of Haematologic and Serologic Studies
Drugs Affecting Cerebrospinal Fluid Studies
TOTAL MEDICAL DIAGNOSTIC LABORATORY SOLUTIONS FROM THE TULIP GROUP OF COMPANIES
Rapid Tests
Elisa
Immunohaematology
Immunohaematology
Haematology
Immunology
Immunoturbidimetry
Microbiology
Microbiology
Biochemistry
Reagents and Controls
Instrumentation
In Pipe Line
MANUFACTURING LOCATIONS
THYROID IMMUNOASSAYS
Thyroid Microwell ELISA
Thyroid Microwell Elisa
Thyroid Coated Tube Assay
FERTILITY IMMUNOASSAYS
Pituitary Hormone Microwell Elisa
PITUITARY HORMONE COATED TUBE ASSAY
STEROID HORMONE MICROWELL ELISA
ONCO IMMUNOASSAYS
Tumour Marker Microwell Elisa
Tumour Markers Coated Tube Assay
TORCH IMMUNOASSAYS
TORCH Panel Microwell ELISA
TORCH Combination ELISA
HEPATITIS MARKER IMMUNOASSAYS
Hepatitis Marker Microwell ELISA
AUTOIMMUNE IMMUNOASSAYS
Autoimmune ELISA Kits
OTHER IMMUNOASSAYS
Other ELISA
LIQUITECH QUALITY CONTROL PACKAGES
Referral/Accuracy Control
Referral/Accuracy Control (Ex. QC)
Precision Control (In. QC)
LIQUITECH VARIFIX
CAPP Varifix Single Channel Standard Micropipette
CAPP Varifix Single Channel Short Micropipette
CAPP Varifix Single Channel Colourline Micropipette
CAPP Varifix Multichannel Micropipette
CAPP VARIFIX-HLA TERASAKI PIPETTE
TRANSPLANTATION DIAGNOSTICS
Pre-Dropped HLA Typing Sera
HLA-SSO/SSP TYPING SYSTEMS
Lyophilised Sera for HLA Typing, HLS Control Sera and Accessories
IMMUNOASSAY AUTOMATION
Triturus: Fully Automated Walkaway Enzyme Immunoassay Automation
Triturus
ALPHA PRIME: MULTIPARAMETRIC IMMUNOASSAY SYSTEM
Alpha Prime
INDEX
TOC
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