CKD-EPI GFR EQUATIONS
CKD-EPI CKD-EPI CYSTATIN C (2012) CKD-EPI CYSTATIN C-CREATININE (2012) MDRD STUDY
ml/min . (All values expressed in ml/min/1.73 m2)
Serum Cr Serum Cys C
(mg/L)
Age (yrs) Race Gender

mg/dL
μmol/L
AA
O*
M
F
Chronic kidney disease (GFR less than 60 or kidney damage for at least 3 months)
MDRD STUDY EQ
CKD-EPI CREATININE EQ (2009)
CKD-EPI CYSTATIN C (2012)
CKD-EPI CYSTATIN C-CREATININE (2012)
TRACEABLE TO IDMS ? N Y

*O=All ethnic groups other than African American. Cr=creatinine. Cys=cystatin. Eq=Equation.
Remove Body Surface Area Adjustment to Express GFR in ml/min

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