Work out egfr (ckd epi) instantly with clear inputs, formula shown and shareable results.
Applies the race-free CKD-EPI 2021 creatinine equation, the current recommended estimate of glomerular filtration rate.
CKD-EPI 2021 creatinine
eGFR = 142 x min(Scr/k,1)^a x max(Scr/k,1)^-1.200 x 0.9938^age x 1.012 (if female), with k = 0.7 female / 0.9 male and a = -0.241 female / -0.302 male
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
The 2021 NKF-ASN task force concluded that a race coefficient was not biologically justified and recommended the race-free equation.
Yes. The combined creatinine-cystatin C equation is more accurate and is recommended when a confirmatory estimate is needed.