Creatinine Clearance: Male, Age 70, 75 kg, Cr 1.5
A 70-year-old male weighing 75 kg with creatinine 1.5 mg/dL has an estimated creatinine clearance of approximately 43 mL/min.
How to use this tool
- Enter age, weight, serum creatinine and sex in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your creatinine clearance and the full breakdown beneath it.
Elderly patients with elevated creatinine have significantly reduced clearance; this scenario estimates about 43 mL/min, requiring dose adjustments for renally cleared drugs.
Frequently asked questions
- Which weight should I use?
- Use actual body weight if it is at or below ideal body weight. For obese patients, adjusted body weight (ABW) is often preferred; consult a pharmacist or physician for dosing decisions.
- How does CrCl differ from eGFR?
- Both estimate kidney function, but the CKD-EPI eGFR is normalised to 1.73 m² BSA and is preferred for CKD staging. CrCl from Cockcroft-Gault is preferred for drug dosing because most clinical trials used it to define dosing thresholds.