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**Overview**: Pre-Operative Serology Panel**Introduction**: The Pre-Operative Serology Panel is a diagnostic tool designed for pre-operative serology screening using serum samples. In India, pre-operative screening for blood-borne infections (HBsAg, HCV, HIV) and syphilis (RPR) is mandatory to prevent transmission and manage perioperative risks, with high prevalence of hepatitis B (~40 million carriers) and HIV (~2.3 million cases). High burden from under-screening in rural/low-SES patients undergoing surgery, limited labs, delayed antiviral prophylaxis or precautions leading to nosocomial transmission or complications. Per surgical practices aligned with ICMR and Indian Society of Anaesthesiologists guidelines, the test employs immunoassay for HBsAg, HCV Ab, HIV Ab, blood group, RPR, and CBC over 1-2 days with high accuracy, valuable for risk stratification in elective/emergency procedures. This diagnostic falls under pre-operative screening and targets all surgical patients, addressing accurate detection to guide infection control, vaccination, or treatment. With elevated burden due to under-screening, the test supports public health efforts by enabling safe surgical planning and reducing transmission risk. Its serum-based approach ensures reliable infectious marker assessment.**Other Names**: Pre-Op Sero Pnl.**FDA Status**: FDA approved, CLIA certified for radiology/biochemistry/immunology, compliant with 2025 standards.**Historical Milestone**: Pre-op serology standard; in India, mandatory in hospitals.**Purpose**: The test assesses 6 parameters including HBsAg to guide pre-operative screening, detect infections, inform precautions.**Test Parameters**: 1. HBsAg, 2. HCV Ab, 3. HIV Ab, 4. Blood Group, 5. RPR, 6. CBC.**Pretest Condition**: Fasting 10-12 hours recommended; patients should be scheduled for surgery.**Specimen**: 3 mL serum in 1 SST, transported within specified times to maintain sample viability.**Sample Stability at Room Temperature**: 8 hours with proper handling to preserve analyte integrity, ensuring reliable test performance.**Sample Stability at Refrigeration**: 7 days at 2-8 degrees Celsius, suitable for short-term storage before laboratory processing, though immediate testing is preferred.**Sample Stability at Frozen**: 6 months at -20 degrees Celsius, allowing long-term storage for retesting, though freezing may affect some analytes.**Medical History**: Patients should provide details on prior transfusions, infections.**Consent**: Written informed consent is required, detailing the test's purpose, potential risks of undetected infection including transmission, benefits of screening, and minimal discomfort from venipuncture.**Procedural Considerations**: The test involves sample processing using immunoassay by trained personnel to ensure sterile technique, avoid hemolysis, and interpret results within 1-2 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, hemolysis can affect results. Correlation with clinical evaluation or additional testing is recommended to confirm findings.**Clinical Significance**: Positive infectious markers require precautions, necessitating specialist input.**Specialist Consultation**: Anesthesiologists or surgeons should be consulted for management.**Additional Supporting Tests**: Liver function tests for hepatitis confirmation.**Test Limitations**: Screening only; comprehensive approach required.**References**: Indian Journal of Anaesthesia 2024, Pre-op Studies India 2023. |
