Osmolality, Urine : 678

Test Code
UOSMOQ or 678

CPT Codes
83935

Instructions
Random urine.

Transport Container
Transport 2 mL random urine (Minimum 0.5 mL) in a standard transport tube.

Transport Temperature
Refrigerated.

Specimen Stability
Room temperature: 4 days; Refrigerated: 7 days; Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Preserved urine.

Methodology
Freezing Point Depression

Setup Schedule
Monday - Friday

Report Available
1-4 days (From receipt at performing laboratory)

Reference Range
50-1200 mOsm/kg

Clinical Significance
Useful for assessing the concentrating ability of the kidney.

Performing Laboratory
Quest Diagnostics



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.