Measured Creatinine Clearance (timed urine)
Measured (timed-urine) creatinine clearance (Stevens/Levey 2009 review) = (urine creatinine x urine volume) / (serum creatinine x collection time in minutes).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Urine creatinine
- 100 mg/dL
- Urine volume
- 1440 mL
- Serum creatinine
- 1.0 mg/dL
- Collection time
- 24 hours
Result: Measured creatinine clearance 100 mL/min (24-hour timed collection; not BSA-normalized).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- value
- CrCl (mL/min) = (urine Cr x urine volume mL) / (serum Cr x time min). Typical adult ~90-140 mL/min, falling with age; not BSA-normalized. The measured counterpart to the Cockcroft-Gault estimate.
What you enter
- Urine creatinine
- Urine volume
- Serum creatinine
- Collection time
How this is calculated
Measured creatinine clearance = (urine creatinine x urine volume) / (serum creatinine x collection time) — the C = (U x V) / P clearance identity. Reviewed in Stevens LA, Levey AS. Measured GFR as a confirmatory test for estimated GFR. J Am Soc Nephrol. 2009;20(11):2305-2313. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.