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Osmolality, Urine, Random

Tube Type = Urine Tube Yellow Top

Specimen Type

Test ID   LAB5109
EPIC ORDER
   OSMOLALITY, RANDOM URINE
CPT Code(s)   83935
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine 30; STAT 888
Specimen Routine:

10 mL random urine in Yellow Top Urine Tube (No Preservative/Additive). See comments

10 ml random urine in sterile specimen cup is acceptable if refrigerated.
  Micro: 1 mL random urine in Yellow Top Urine Tube (No Preservative/Additive)
Stability Up to 24 hrs refrigerated
Availability 24 hrs/ day
Turnaround Time Routine: 2 hrs
  STAT: 1 hr
Reference Range Normal: Undefined, varies with fluid intake and hydration state; >600 mosm/kg
Comments Other clinical data should be taken into consideration when interpreting these results.

Reviewed by J. Carr on January 02, 2026

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514