Kidney Association Gfr Calculator. Normal gfr varies according to age sex and body size and declines with age. Estimated gfr ml min 1 73m 2 186 x creat 88 4 1 154 x age 0 203 x 0 742 if female x 1 210 if black serum creatinine is correlated with muscle mass and therefore estimation of gfr using prediction equations in people with extremes of muscle mass is subject to inaccuracy.
186 x creatinine 88 4 1 154 x age 0 203 x 0 742 if female x 1 210 if black. Calculator above uses the abbreviated mdrd equation. Egfr calculator egfr stands for estimated glomerular filtration rate.
If you have an egfr value calculated by a local laboratory use that.
The best way to determine drug dosing is with the ckd epi creatinine equation 2009 or the mdrd study. Both have been shown to be more accurate than the cg formula. The gfr glomerular filtration rate calculator estimates gfr values based on factors including serum creatinine value age race and gender. Results consistently below 60ml min 1 73m2 indicate chronic kidney disease.