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HelpTest Code UOSMO Osmolality, Urine LAB420
Test Method
Freezing Point Osmometry; Osmo I, Advanced Instruments
Performance
Testing is performed Monday through Sunday.
Typically completed within 4 hours after the specimen
arrives at the testing site.
Specimen Requirement
2 mL urine is required.
Useful For
Assessing the concentrating and diluting ability of the
kidney
Reference Values
0-11 months: 50-750 mOsm/kg
≥12 months: 150-1,150 mOsm/kg
CPT Code Information
83935 Chemistry: Osmolality; urine
LOINC Code Information
2695-5 Osmolality Of Urine
Additional Specimen Collection Information
Random urine specimen in a tightly capped container. Store
specimen refrigerated at 2-8°C.