| CrCl (ml/min) by 24-hour
urine collection (1)
= [UCr x 24-hr urine volume (ml/day)] / [SCr x 1440 (min/day)]
CrCl (ml/min) by Cockcroft & Gault formula (2)
= [(140 - Age) x Weight (kg) x 1.2 x 0.85 (if female)] /
SCr
GFR (ml/min/1.73m2) by abbreviated MDRD equation
(3)
= 186 x (SCr x 0.0113)-1.154 x Age-0.203
x 0.742 (if female) x 1.21 (if Afro-americans) |
CrCl: creatinine clearance
UCr: urine creatinine concentration in mmol/L
SCr: serum creatinine concentration in mmol/L
MDRD: Modification of Diet in Renal Disease |