Inker et al reported equations for estimating glomerular filtration rate (eGFR) based on serum cystatin C concentrations, age and gender. It was developed by the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration) investigators.
Parameters:
(1) serum cystatin C in mg/L
(2) gender
(3) age in years
Parameter
Finding
Factor A
serum cystatin
<= 0.8
-0.499
> 0.8
-1.328
Parameter
Finding
Factor B
gender
male
1
female
0.932
estimated GFR in mL per min per 1.73 square meter BSA =
