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**Overview**: Total WBC Count Differential Count ESR Panel**Introduction**: The Total WBC Count Differential Count ESR Panel is a diagnostic tool designed for hematological assessment using whole blood samples. In India, elevated ESR with WBC abnormalities indicates chronic inflammation/infection (TB, autoimmune, malignancy), common in rural/low-SES due to malnutrition and delayed care. High morbidity from under-testing leading to missed chronic diseases or misdiagnosis, limited labs, delayed anti-inflammatory or ATT therapy. Per hematology practices aligned with ICMR and Indian Society of Haematology & Blood Transfusion guidelines, the test employs microscopy/flow cytometry for total WBC count, differential (neutrophils, lymphocytes, etc.), absolute counts, peripheral smear, and ESR over 1â€"2 days with high accuracy, valuable for inflammation/infection profiling. This diagnostic falls under hematological screening and targets patients with chronic fever, weight loss, or joint pain, addressing accurate detection to guide antibiotics, steroids, or further workup. With elevated morbidity due to underdiagnosis, the test supports public health efforts by enabling combined WBC/ESR evaluation and reducing inflammatory burden. Its whole blood-based approach ensures reliable cellular/inflammatory assessment.**Other Names**: WBC Diff ESR Pnl.**FDA Status**: FDA approved, CLIA certified for hematology, compliant with 2025 standards.**Historical Milestone**: WBC + ESR standard in chronic disease workup; in India, key in TB screening.**Purpose**: The test assesses 13 parameters including total WBC count and ESR to guide hematological disorder screening, detect inflammation/infection, inform therapy.**Test Parameters**: 1. Total WBC Count, 2. Neutrophils, 3. Lymphocytes, 4. Monocytes, 5. Eosinophils, 6. Basophils, 7. Absolute Neutrophil Count, 8. Absolute Lymphocyte Count, 9. Absolute Monocyte Count, 10. Absolute Eosinophil Count, 11. Absolute Basophil Count, 12. Peripheral Smear, 13. ESR.**Pretest Condition**: No fasting required; patients should have chronic symptoms.**Specimen**: 3 mL EDTA whole blood, transported within specified times to maintain cell viability.**Sample Stability at Room Temperature**: 24 hours with proper handling to preserve cell morphology/ESR, ensuring reliable test performance.**Sample Stability at Refrigeration**: 48 hours at 2-8 degrees Celsius, suitable for short-term storage before laboratory processing, though immediate testing is preferred.**Sample Stability at Frozen**: Not frozen (fresh sample preferred for hematology).**Medical History**: Patients should provide details on fever, weight loss, joint pain.**Consent**: Written informed consent is required, detailing the test's purpose, potential risks of undetected inflammation including malignancy/TB, benefits of screening, and minimal discomfort from blood draw.**Procedural Considerations**: The test involves sample processing using microscopy/flow cytometry by trained personnel to ensure sterile technique and interpret results within 1â€"2 days using provided controls. Laboratories must maintain a controlled environment, adhere to quality assurance protocols.**Factors Affecting Result Accuracy**: Delays beyond stability periods, improper storage conditions, or clotted sample can affect results. Correlation with clinical evaluation or additional testing is recommended to confirm findings.**Clinical Significance**: Elevated ESR + neutrophilia indicates bacterial/chronic inflammation; lymphocytosis + high ESR viral/autoimmune, necessitating specialist input.**Specialist Consultation**: Hematologists or infectious disease specialists should be consulted for management.**Additional Supporting Tests**: CRP, culture, imaging for confirmation.**Test Limitations**: ESR nonspecific; comprehensive approach required.**References**: Indian Journal of Hematology 2024, Hematological Studies India 2023. |
