Estimated GFR (CKD-EPI 2021)
Estimated GFR (CKD-EPI 2021) - a deterministic tool in Sophie Well's Clinical Math & Conversions group.
Open the Estimated GFR (CKD-EPI 2021) → Runs in your browser. No signup, no tracking.
What this is
Estimate glomerular filtration rate using the 2021 CKD-EPI creatinine-only equation, which the National Kidney Foundation and ASN jointly recommend as the race-free standard. Enter serum creatinine, age, and sex; Sophie Well returns the eGFR in mL/min/1.73 m^2. The 2021 equation drops the race coefficient that the prior 2009 CKD-EPI equation used.
When to use it
Use this anywhere you would have run CKD-EPI: medication dose adjustment, contrast risk assessment, CKD staging, or transplant eligibility math. For comparison with legacy values or Cockcroft-Gault-based dosing, the eGFR Suite tile shows MDRD (race-free) and Cockcroft-Gault on the same screen.
References
Inker LA, Eneanya ND, Coresh J, et al. New creatinine and cystatin C-based equations to estimate GFR without race. NEJM. 2021;385(19):1737-1749. Implements the 2021 race-free creatinine-only equation. Read the source ↗
Worked example: eGFR ~60 mL/min/1.73m^2
Sophie Well is a reference and educational tool. Not medical, legal, or financial advice. Does not replace clinician judgment, professional billing review, or legal counsel.