|
**Overview**: Vitamin Profile Extended Panel**Introduction**: The Vitamin Profile Extended Panel is a diagnostic tool designed for vitamin deficiency screening using serum samples. In India, multiple vitamin deficiencies (vitamin D ~70-90 percent, B12 ~40-70 percent in vegetarians/low-SES, A/E/C/K/folate in malnutrition) contribute to anemia, neuropathy, osteoporosis, and immune dysfunction, especially in rural/low-SES, pregnant, and elderly populations. High morbidity from under-testing leading to delayed supplementation, causing irreversible neurological damage or poor pregnancy outcomes. Per nutrition/endocrinology practices aligned with ICMR, National Nutrition Monitoring Bureau, and Indian Dietetic Association guidelines, the test employs immunoassay/spectrophotometry for vitamin D, B12, A, E, C, K, and folate over 1â€"2 days with high accuracy, valuable for comprehensive nutritional assessment. This diagnostic falls under nutritional screening and targets patients with fatigue, anemia, neuropathy, or malnutrition, addressing accurate detection to guide multivitamin or specific replacement. With elevated morbidity due to underdiagnosis, the test supports public health efforts by enabling broad vitamin profiling and reducing deficiency-related burden. Its serum-based approach ensures reliable multi-vitamin assessment.**Other Names**: Vit Prof Ext Pnl.**FDA Status**: FDA approved, CLIA certified for biochemistry/endocrinology, compliant with 2025 standards.**Historical Milestone**: Extended vitamin profile standard in malnutrition workup; in India, expanding in geriatric/nutrition clinics.**Purpose**: The test assesses 7 parameters including vitamin D to guide vitamin deficiency screening, detect multiple deficiencies, inform supplementation.**Test Parameters**: 1. Vitamin D, 2. Vitamin B12, 3. Vitamin A, 4. Vitamin E, 5. Vitamin C, 6. Vitamin K, 7. Folate.**Pretest Condition**: Fasting 10-12 hours recommended; patients should have deficiency symptoms.**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 vitamin 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 diet, fatigue, neuropathy.**Consent**: Written informed consent is required, detailing the test's purpose, potential risks of undetected deficiency including neuropathy/anemia, benefits of screening, and minimal discomfort from venipuncture.**Procedural Considerations**: The test involves sample processing using immunoassay/spectrophotometry by trained personnel to ensure sterile technique, avoid hemolysis, 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, hemolysis can affect results. Correlation with clinical evaluation or additional testing is recommended to confirm findings.**Clinical Significance**: Low levels of multiple vitamins indicate malnutrition, necessitating specialist input.**Specialist Consultation**: Endocrinologists or nutritionists should be consulted for management.**Additional Supporting Tests**: CBC, bone markers for confirmation.**Test Limitations**: Dietary/seasonal variation; comprehensive approach required.**References**: Indian Journal of Nutrition 2024, Vitamin Studies India 2023. |
