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24-Hour Urine Osmolality

Message
Day(s) Test Set Up: Monday through Sunday


Test Code
UOS24


CPT Codes
81050, 83935

Preferred Specimen
Entire 24-hour Urine


Instructions
Submit an entire 24-hour collection in a urine container supplied. No preservative.
Note: 1. Starting and ending times of collection and total volume are required on requst from for processing. 2. See "Urine Collection" in "Special Instructions."


Transport Temperature
Refrigerated


Methodology
Freezing Point

Reference Range
300-900 mosmol/kg


Clinical Significance
Osmolality is a measure of the number of dissolved solute particles in the solution (i.e., concentration of urine).



Last Updated: January 31, 2020


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.