Kidney, ECG and body measures
eGFR (CKD-EPI 2021)
Kidney function (CKD-EPI 2021)
- Results update as you type
- For healthcare professionals
Calculator
eGFR
3 inputs · instant result
About this calculator
Estimates glomerular filtration rate from serum creatinine, age and sex, using the 2021 CKD-EPI equation without a race term. For adults, with a stable creatinine.
FormulaeGFR = 142 × min(Scr/κ, 1)^α × max(Scr/κ, 1)^−1.200 × 0.9938^age × 1.012 (if female). κ = 0.7 (female) or 0.9 (male); α = −0.241 (female) or −0.302 (male).
How to read the result
| Result | Meaning |
|---|---|
| 90 or more | G1: normal or high |
| 60 to 89 | G2: mildly decreased |
| 45 to 59 | G3a: mildly to moderately decreased |
| 30 to 44 | G3b: moderately to severely decreased |
| 15 to 29 | G4: severely decreased |
| Below 15 | G5: kidney failure |
References
- Inker LA, et al. New creatinine- and cystatin C-based equations to estimate GFR without race. N Engl J Med. 2021;385:1737-1749.
- KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int. 2024;105(4S):S117-S314.
