What you need: serum creatinine from a standard blood panel, plus your age and sex.
Kidney Function (eGFR) Calculator
How to use this calculator
Enter your serum creatinine from a standard blood panel, plus your age and sex.
What your result means
This uses the 2021 CKD-EPI creatinine equation, the current race-free version recommended by the National Kidney Foundation and American Society of Nephrology joint task force. Kidney function naturally declines with age, and creatinine alone can look falsely normal in people with lower muscle mass (common in older adults) β eGFR corrects for age and sex to give a clearer picture, reported in stages from G1 (normal) to G5 (kidney failure).
"Explained why creatinine alone can look normal in older adults β useful context for my mother's results too."
β Ingrid S.
"Good to see the actual current CKD-EPI equation used, not an outdated race-based one."
β Tunde A.
aweGene provides general wellness information for educational purposes only β it is not medical advice, diagnosis, or treatment. Always consult a licensed physician before making health decisions.
Questions and answers
What is eGFR?
The estimated glomerular filtration rate (eGFR) estimates how well your kidneys filter blood. It is calculated from serum creatinine, age and sex.
Does a low result mean I have kidney disease?
Not by itself. A diagnosis needs repeat tests over time and a clinician's assessment.
aweGene tools are educational estimates and do not replace professional medical advice.
Sources and background reading
The methods and ideas behind this tool. aweGene calculators are educational estimates, not clinical implementations. Links open PubMed or the publisher.
Inker LA, Eneanya ND, Coresh J, et al. New creatinine- and cystatin C-based equations to estimate GFR without race. N Engl J Med 2021;385:1737-1749. Open →
