OSMOLALITY, RANDOM URINE

Specimen Required
Collect random urine. Send 1.0 mL urine (0.2 mL minimum) room temperature in a screw-capped plastic vial.

Alternate Specimen
Urine, 24 hour collection

Rejection Criteria
Preserved urine

Methodology
Freezing Point Depression

Stability
Room Temperature: 7 days; Refrigerated: 14 days; Frozen: 6 months

Reference Range
50 - 1200 mOsm/kg

Performed
Monday, Wednesday, Friday

Turnaround Time4-6 days
Test CodeUOSMQ
CPT-4 Code (s)
83935
LOINC Codes
2695-5

Warde
Medical
Laboratory