 - Serum creatinine 1.0 mgdL; if serum creatinine 1.0 mgdl, then the estimated glomerular filtration rate GFR must be 60 mLmin1.73 m2 as calculated by the Modification of Diet in Renal Disease equation where predicted GFR mlmin1.73 m2 186 X Serum Creatinine-1.154 X age in years-0.203 X 0.742 if patient is female X 1.212 if patient is black 