This calculator uses the Cockcroft and Gault equation for the estimation of glomerular filtration rate, and corrects for body
size. Accuracy of the GFR calculator is limited at the extremes of
age.
In most cases a GFR 1.5ml/sec (90ml/min) is abnormal;
and requires explanation. Often the GFR may be only transiently <
1.5ml/sec (90ml/min) / 1.73m2 BSA.
A repeat blood creatinine estimation, and calculation, in the near future is
recommended.
Referral should be considered if the GFR is below 1.0ml/sec (60ml/min); and
referral to a renal physician is recommended if GFR (glomerular filtration
rate or creatinine clearance) below 0.5ml/sec (30ml/min) /1.73m2 BSA (body surface area).
