Creatinine Clearance for 70-Year-Old, 60 kg, SCr 1.5
A 70-year-old patient weighing 60 kg with serum creatinine of 1.5 mg/dL has an estimated creatinine clearance of approximately 35 mL/min, indicating moderate CKD.
How to use this tool
- Enter age in years and body weight in kilograms.
- Enter serum creatinine in mg/dL.
- Select sex to apply the 0.85 factor for females.
- Read the estimated creatinine clearance and category.
Estimate renal function in an elderly patient with high creatinine to guide drug dosing in chronic kidney disease.
Frequently asked questions
- What is a normal creatinine clearance?
- A CrCl of roughly 90 mL/min or above is generally considered normal for adults, though it declines naturally with age. Lower values suggest reduced kidney filtration.
- Which weight should I enter?
- Cockcroft-Gault was derived with actual body weight, but clinicians often use ideal or adjusted weight for very lean or heavier patients to avoid over- or underestimating clearance.
- Is creatinine clearance the same as eGFR?
- They are related but not identical. Cockcroft-Gault CrCl is still used for drug dosing, while eGFR equations like CKD-EPI are preferred for staging chronic kidney disease.