Pathology Handbook

Urine Creatinine (random)

Clinical Indications

Many analytes in urine are measured as analyte:creatinineratios to enable comparisons to be made against a wide range of urine concentrations and so reference ranges can be applied.

Urine creatinine is in drugs of abuse testing to detect deliberate sample dilution by clients to ensure a negative result

Request Form 

Request on ICE as Urine Creatinine or relevant analyte/creatinine ratio

Availability

Daily

Specific criteria

Random urine sample (unless part of a urine protein/creatinine or urine albumin/creatinine ratio, in which case an early morning urine is required)

Patient Preparation

None

Turnaround Time

3 working days

Specimen

Random urine in white-top universal

Volume

5.0 ml (2.0 ml minimum)

Container

Urine bottle white top

Collection

Samples should be transported to laboratory on the same day.

Causes for Rejection

Unlabelled or incorrectly labelled sample; delay of more than 5 days in sample reaching laboratory or in wrong sample container

Interpretation

See laboratory report for interpretation of results