eGFR (Estimated Glomerular Filtration Rate)
eGFR estimates how much blood passes through the glomeruli (kidney filters) each minute. It is calculated from creatinine, age, sex, and race using the CKD-EPI equation.
eGFR is the primary staging tool for chronic kidney disease (CKD). Stage 1: ≥90, Stage 2: 60–89, Stage 3: 30–59, Stage 4: 15–29, Stage 5: <15 (kidney failure).
eGFR can be falsely low in muscular individuals (high creatinine from muscle mass, not kidney damage).
What It Measures
Estimated rate of blood filtration by the kidneys.
Reference Ranges
| Status | Range (mL/min/1.73m²) |
|---|---|
| Optimal | > 90 mL/min |
| Normal | 60–90 mL/min |
| Borderline | 45–60 mL/min (CKD Stage 3a) |
| Out of Range | < 45 mL/min (CKD Stage 3b+) |
How GATOR Tracks This
Lab Providers
Related Clinical Ratios
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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