Creatinine clearance from a measured urine collection

Time of urine collection period:
Volume of urine*:
Concentration of creatinine in urine specimen*:
Concentration of creatinine in serum at midpoint of urine collection period:
Calculate creatinine clearance Clear Answer and Values Entered Above

*The product of these values equals the production of creatinine during the collection period and, at steady state, should equal 20-25 mg/kg/day ideal body weight (IBW) in males and 15-20 mg/kg/day IBW in females. If it is less than this, inadequate urine collection may have occurred and creatinine clearance will be underestimated.