The CKD-EPI 2021 equation estimates glomerular filtration rate (eGFR) from serum creatinine, age, and sex. It uses the race-free revision published by Inker et al. in the New England Journal of Medicine in 2021. Results are reported in mL/min/1.73m² and staged using the KDIGO 2012 CKD classification, which splits stage G3 into G3a and G3b for more precise clinical guidance.
This tool is for reference only. Clinical decisions should always involve a qualified healthcare professional.