คำนวณ GFR (Glomerular Filtration Rate) Serum creatinine mg/dl Age yrs Sex male female Body weight optional kgs CKD-EPI formula White or other race female If serum creatinine (Scr) <= 0.7 If serum creatinine (Scr) > 0.7 White or other race male If serum creatinine (Scr) <= 0.9 If serum creatinine (Scr) > 0.9 MDRD formula Cockcroft-Gault formula MDRD equation for Thais is as follows: = 175 × Cr(Enz) ((-1.154)) × Age ((-0.203)) × 0.742 (if female) × 1.129 (if Thai). Thai eGFR formula is: = 375.5 × Cr(Enz) ((-0.848)) × Age ((-0.364)) × 0.712 (if female). C-MDRD (modified for Chinese) equation: = 175 × (Serum Creatinine)-1.234 × (Age)-0.179 × (0.79 if Female) J-MDRD (modified for Japanese) equation: = 194 × (Serum Creatinine)-1.094 × (Age)-0.287x (0.739 if Female)