A 38-year-old female asked:
on my lab work it says gfr nonafr is 111 and gfr african is 134. is this normal? i didn't know what this meant.
1 doctor answer
Dr. Ed Friedlander answered
44 years experience Pathology
Subscientific: Using a spot creatinine to estimate glomerular filtration rate is subscientific but it's something that our weird medicolegal environment forces labs to do, using a formula that was intended for populations rather than individuals. The number is estimated using different formulas "because black people are more muscular than white people." Creatinine's produced by muscle. Be glad for good health.
Answered on Mar 9, 2015
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