A member asked:

What is the significance of egfr if low numbers don't alarm doctors. mine has been in the 70's and i've had several around 54 and my lowest 49?

A doctor has provided 1 answer

Pitfalls of EGFR: Egfr's are estimates, hence the "e". Its unreliability is evidenced, in your case, by the variations you've had your egfr's. .Your egfr is calculated using your age, sex, weight, serum creatinine and race. If you wish to have an accurate value of your actual gfr, have your doctor or a nephrologist order a 24 hour urine for a creatinine clearance.

Answered 8/13/2013

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