Osmolality, Random Urine

Test Code
UOSM


Preferred Specimen
10 mL random urine


Minimum Volume
2 mL


Transport Container
Plastic urine container


Transport Temperature


Refrigerated (cool packs)




Specimen Stability
 Refrigerated: 24 hours


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


Methodology
Freezing Point Depression

Setup Schedule
24/7


Report Available
Same day


Reference Range


<1 year: 50-600 mOsm/kg
>1 year: 300-900 mOsm/kg




Clinical Significance
For assessing the concentrating ability of the kidney.




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.