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RenalNephrology

Creatinine Clearance (CrCl)

Estimates CrCl for drug dosing. Standard formula for renal dose adjustment (not for CKD staging).

Age
years
Body weight (use IBW if obese)
kg
Serum creatinine
µmol/L
Sex

Reference: Cockcroft DW, Gault MH. Nephron 1976

Medical Disclaimer: This calculator is a clinical decision support tool for qualified healthcare professionals. It does not replace clinical judgement. Always interpret results in the full clinical context. Reference: Cockcroft DW, Gault MH. Nephron 1976.

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Differentiates pre-renal from intrinsic renal AKI. FENa < 1% = pre-renal. Invalid on diuretics — use FEUrea instead.

RenaleGFR (MDRD)

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RenalFEUrea

Differentiates pre-renal from intrinsic renal AKI, particularly useful when diuretics preclude interpretation of FENa.