Preferred Sample Type
Suitable Specimen Types
24 Hour Urine Plain SerumCreatinine Clearance
Specimen Volume
24 Hour Urine Collection plus 0.5 mL serumTurnaround Time
24 HoursSample Processing In Laboratory
Samples should be handed to BMS staff for booking inGeneral Information
The creatinine clearance test compares the level of creatinine in urine with the creatinine level in the blood. (Creatinine is a breakdown product of creatine, which is an important part of muscle.) The test helps provide information on kidney function.
See also:
Patient Preparation
1st Day.
08.00 hours: Start collection of 24 hour specimen of urine in a plain urine container without preservative (white/label with black type).
2nd Day
08.00 hours: Finish 24 hour collection and send it to the laboratory together with a blood specimen collected during this period for serum creatinine.
Shorter urine collection periods may be adopted eg. 4 hours or 12 hours, but a 24 hour collection provides a more reliable result.
Notes
A 24 h urine sample should be collected with a concurrent serum sample taken during the urine collection period.
Reference Range
Adult male/female reference range: ≥90 mL/min
(2014 NICE CKD guidelines CG182)
Specifications
- EQA Status: NEQAS
- EQAS Scheme: Yes