A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

OSMOLALITY URINE

Test Code
UOSMO


Alias/See Also
OSU


CPT Codes
83935

Preferred Specimen
Sterile container without additive


Minimum Volume
1.0 mL


Specimen Stability
Room Temperature: Up to 24 hours
Refrigerated: Up to 24 hours
Frozen: Up to 14 days


Methodology
Freezing-point depression method is used to measure Osmolality.  Osmolality is the total solute concentration of an aqueous solution.

Reference Range
Urine: 300 – 900 mOsm/kg


Clinical Significance
For assessing the concentrating ability of the kidney.



Last Updated: December 28, 2023


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.