The normal range for a Renal Function Test (RFT) varies depending on the specific components being measured and the laboratory performing the test. There isn't a single "normal range" for all RFTs. Instead, RFTs encompass several blood tests that assess kidney function. The normal ranges for some common components are presented below, but always refer to the specific ranges provided by your laboratory.
Key Components of RFT and their Normal Ranges:
The following values are examples and may vary slightly depending on the lab and the individual:
- Blood Urea Nitrogen (BUN): 6 - 20 mg/dL Ganesh Diagnostic This measures the amount of urea nitrogen in your blood, a waste product your kidneys filter.
- Creatinine: 0.7 - 1.3 mg/dL for men and 0.6 - 1.1 mg/dL for women Ganesh Diagnostic. Creatinine is another waste product filtered by the kidneys.
- BUN/Creatinine Ratio: 5.5 - 19.2 % Ganesh Diagnostic. This ratio helps assess kidney function.
- Uric Acid: 3.5 - 7.2 mg/dL Ganesh Diagnostic. Uric acid is a waste product of cell breakdown.
- Calcium (Serum): 8.4 - 10.2 mg/dL Ganesh Diagnostic. Calcium levels are relevant to overall health and kidney function.
- eGFR (Estimated Glomerular Filtration Rate): While not always included in a basic RFT, eGFR is a crucial indicator of kidney function. Values above 90 ml/min/1.73 m² are generally considered normal, but stages of kidney disease are defined by lower ranges (e.g., Stage 2: 60-89 ml/min/1.73 m²). Physiopedia
Important Note: Other components like electrolytes (sodium, potassium, etc.) might also be included in a comprehensive RFT, and their normal ranges will also vary.
Results outside the normal ranges could indicate kidney problems, but further investigation is usually needed for accurate diagnosis. High creatinine levels, for example, could indicate impaired renal function or kidney disease. Health-e
