How is CKD-EPI 2021 different from the 2009 version?

The 2021 CKD-EPI equation removes the race coefficient (Black race multiplier) due to evidence that race is a social not biological construct.

What eGFR defines CKD stage 3?

CKD Stage 3a: eGFR 45-59; Stage 3b: 30-44; Stage 4: 15-29; Stage 5: <15 (kidney failure). CKD requires persistence ≥3 months.

eGFR is unreliable in AKI, extremes of muscle mass (amputees, bodybuilders), pregnancy, and rapidly changing creatinine.

Calculate estimated GFR using the 2021 CKD-EPI equation (race-free) — the current standard for CKD staging.

Use the full interactive calculator below, or

Creatinine Clearance

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MDRD eGFR

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CKD Stage

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AKI Stage

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