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**Overview**: Kidney Function Panel**Introduction**: The Kidney Function Panel is a diagnostic tool designed to assess kidney function using serum samples. In India, chronic kidney disease (CKD) affects ~17-20 percent of adults (~150 million), with high prevalence in rural/low-SES populations due to diabetes, hypertension, and environmental factors (arsenic, fluoride). High morbidity from under-testing leading to delayed ACEi/ARB or dialysis referral, causing end-stage renal disease (ESRD) or cardiovascular death. Per nephrology practices aligned with ICMR and Indian Society of Nephrology guidelines, the test employs spectrophotometry for creatinine, urea, BUN, sodium, potassium, and chloride over 1-2 days with high accuracy, valuable for eGFR calculation and electrolyte imbalance detection. This diagnostic falls under renal function screening and targets patients with diabetes, hypertension, edema, or proteinuria, addressing accurate detection to guide renoprotection and staging. With elevated morbidity due to underdiagnosis, the test supports public health efforts by enabling precise kidney assessment and reducing ESRD burden. Its serum-based approach ensures reliable electrolyte and renal marker measurement.**Other Names**: KFT Pnl.**FDA Status**: FDA approved, CLIA certified for biochemistry, compliant with 2025 standards.**Historical Milestone**: KFT panel standard; in India, key in NCD programs.**Purpose**: The test assesses 6 parameters including creatinine to guide kidney function evaluation, estimate GFR, detect electrolyte imbalance.**Test Parameters**: 1. Creatinine, 2. Urea, 3. BUN, 4. Sodium, 5. Potassium, 6. Chloride.**Pretest Condition**: Fasting 10-12 hours recommended; patients should report edema or risk factors.**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 diabetes, hypertension, urine output.**Consent**: Written informed consent is required, detailing the test's purpose, potential risks of untreated CKD including dialysis need, benefits of early detection, and minimal discomfort from venipuncture.**Procedural Considerations**: The test involves sample processing using spectrophotometry 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, or muscle mass can affect results. Correlation with clinical evaluation or additional testing is recommended to confirm findings.**Clinical Significance**: Elevated creatinine/low eGFR indicates CKD, necessitating specialist input.**Specialist Consultation**: Nephrologists should be consulted for management.**Additional Supporting Tests**: Urine albumin/creatinine ratio for confirmation.**Test Limitations**: Creatinine-based; comprehensive approach required.**References**: Indian Journal of Nephrology 2024, CKD Studies India 2023. |
