Osmolality, Urine

Message

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

OSMOU

Alias/See Also

70303;
UOSMO;
Urine Osmolality

CPT Codes
83935

Preferred Specimen

2 mL fresh random urine. (minimum 0.5 mL)

Instructions

Obtain specimen in urine collection cup.

Transport Container

Urine Collection Cup

Transport Temperature

Refrigerated

Specimen Stability

Room Temperature = 1 day
Refrigerated = 1 day
Frozen = n/a

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

Incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.

Methodology
osmometer

Setup Schedule

24/7
MVCHEM

Report Available

1 day excluding weekends

Reference Range

SEX	AGE	Report Normals	Units
N/M/F	133Y	50 - 1200	MOSM/KG

Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439

Last Updated: November 23, 2021

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.