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Creatinine Clearance

Estimate renal function using the Cockcroft-Gault equation

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Educational Use Only: This tool is for educational purposes only. It does not replace clinical judgment or medical advice.

Patient Information

Age(years)

years

Weight(kg)

Serum Creatinine(mg/dL)

mg/dL

Gender

MaleFemale

Cockcroft-Gault Formula:

Male: CrCl = ((140 - Age) × Weight) ÷ (72 × Creatinine)

Female: CrCl = ((140 - Age) × Weight) ÷ (72 × Creatinine) × 0.85

Normal Range: 90-120 mL/min

CKD Stages:

• Stage 1: ≥90 mL/min (with kidney damage)

• Stage 2: 60-89 mL/min (with kidney damage)

• Stage 3a: 45-59 mL/min

• Stage 3b: 30-44 mL/min

• Stage 4: 15-29 mL/min

• Stage 5: <15 mL/min or on dialysis

Clinical Applications:

Creatinine clearance is essential for medication dosing adjustments, contrast media risk assessment, and monitoring kidney function progression.

Limitations: Less accurate in extremes of age/weight, muscle mass variations, or rapidly changing kidney function. Consider eGFR (MDRD or CKD-EPI) for routine assessment.

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