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).
Refer if below 1ml/sec/1.73m2 body surface area (BSA).
Units = kg/m2
Units = m2
