A member asked:

Concerned about gfr value 51. very muscular, active 70 yo male. using other formula w/ weight, gfr is 70 and scale said 70 was average for age 70.

A doctor has provided 1 answer

EGFR: E is for estimated. There are many ways to estimate gfr. Best validated is the mdrd available at national kidney foundation. http://www.kidney.org/professionals/kdoqi/gfr.cfm. Egfr declines with age and indeed 70 is about normal for age 70. You sound very muscular so you are not normal. 50 is probably your normal. Avoid medications that could hurt your kidneys and do not become dehydrated.

Answered 6/13/2013

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