CREATINE, URINE

Specimen Required
Collect random urine without preservative. Mix well and send 3.0 mL urine (0.5 mL minimum) frozen in a screw-capped plastic vial.

Alternate Specimen
24 hour urine

Rejection Criteria
Specimen received thawed, refrigerated or room temperature.

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 2 weeks

Reference Range
By report

Performed
Monday

Turnaround Time3-10 days
Test CodeUCRET
CPT-4 Code (s)
82540
LOINC Codes
Specimen Total volume: 19153-6
Hours collected: 30211-7
Creatinine, urine: 14683-7
Creatine, urine: 34275-8
Creatine, 24-hour urine: 2150-1

Warde
Medical
Laboratory