🫘 eGFR kidney function calculator

Q: Where do I find serum creatinine?

Creatinine is in blood test (biochemistry) results. The unit is usually mg/dL or µmol/L - this tool supports both.

Q: What eGFR means kidney failure?

An eGFR below 60 for over 3 months suggests chronic kidney disease. Below 15 is kidney failure. A doctor must diagnose.

Estimate kidney function (eGFR) from serum creatinine, age and sex using the CKD-EPI 2021 formula.

Serum creatinine

Age Sex

What is eGFR?

eGFR estimates how much blood the kidneys filter per minute, reflecting kidney function. It matters because many drugs must be dose-reduced or avoided when kidney function declines.

Kidney disease staging by eGFR

eGFR	Stage
≥ 90	G1 - Normal/high
60 – 89	G2 - Mildly decreased
45 – 59	G3a - Mild to moderate
30 – 44	G3b - Moderate to severe
15 – 29	G4 - Severely decreased
< 15	G5 - Kidney failure

Uses the CKD-EPI 2021 (race-free) formula for adults. Results are for reference only; a doctor must interpret them.

Frequently asked questions

Where do I find serum creatinine?

Creatinine is in blood test (biochemistry) results. The unit is usually mg/dL or µmol/L - this tool supports both.

What eGFR means kidney failure?

An eGFR below 60 for over 3 months suggests chronic kidney disease. Below 15 is kidney failure. A doctor must diagnose.

ⓘ Content on Thuoc Dung is for reference only and does NOT replace examination, diagnosis or treatment by health professionals. Always consult a doctor or pharmacist before starting, stopping or changing any medication.