Creatinine Clearance Estimate by Cockcroft-Gault Equation

 

Input
 

Sex	Female (0.85)
	Male (1)
Age		mo yr
Serum Creat		mcmol/L mg/dL mmol/L
Weight		gm kg lb

 
Result
 
Important: Inputs must be complete to perform calculation.

 

Creat Clear		L/hr L/min L/sec mL/hr mL/min mL/sec
Decimal Precision   0 1 2 3

 

 

Notes

• The default unit of measure for weight is kilograms. Please verify that the correct unit of measure has been selected.
• This equation provides an estimate of the creatinine clearance (Creat Clear) if the plasma creatinine concentration is stable. Weight is the estimated lean body weight.

 
Equations used
 

CreatClear = Sex * ((140 - Age) / (SerumCreat)) * (Weight / 72)

 

 
Equation parameters such as Sex, have two or more discrete values that may be used in the calculation. The numbers in the parentheses, e.g. (0.85), represent the values that will be used.
 

 

References

1. Cockcroft DW, Gault MH. Prediction of creatinine clearance from serum creatinine. Nephron. 1976;16(1):31-41.