Your eGFR estimates how well your kidneys are filtering your blood. This uses the race-free CKD-EPI 2021 equation. Enter your creatinine, age and sex.
eGFR (estimated glomerular filtration rate) estimates how many milliliters of blood your kidneys filter per minute. 90 or above is normal. Values are grouped into KDIGO stages G1 to G5. A single low reading is not a diagnosis, kidney function is confirmed with repeat testing and other markers like urine albumin.
| eGFR | Category |
|---|---|
| 90 and above | G1 — Normal |
| 60 to 89 | G2 — Mildly decreased |
| 45 to 59 | G3a — Mild to moderate |
| 30 to 44 | G3b — Moderate to severe |
| 15 to 29 | G4 — Severely decreased |
| Below 15 | G5 — Kidney failure |
Ranges based on the CKD-EPI 2021 creatinine equation and KDIGO CKD stages. Educational reference, not a diagnosis.
eGFR is one window on your kidneys, and it reads best next to your other markers. BloodMarker reads your entire blood test at once, shows how your markers interact, and tracks them over time so you can watch them improve.
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An eGFR of 90 or above is considered normal. 60 to 89 is mildly decreased and often normal for older adults. Below 60 for three months or more may indicate chronic kidney disease.
It uses the CKD-EPI 2021 creatinine equation, the current race-free standard recommended by the National Kidney Foundation and used by most labs.
Not necessarily. eGFR can dip temporarily from dehydration, certain medications or a recent high-protein meal. Kidney disease is diagnosed from repeated results plus other markers, so confirm with your doctor.
This calculator is for education only and is not medical advice or a diagnosis. Always discuss your results and any changes with a qualified healthcare professional. Provided by the BloodMarker Team · contact@bloodmarker.com