Osmolality, Urine

Test Code
678


CPT Codes
83935

Preferred Specimen
2 mL random urine in a sterile screw cap container


Minimum Volume
0.5 mL


Transport Temperature
Room temperature


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
Night Sets up 3 days a week.


Report Available
Reports in 3 to 6 days.


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.