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* OSMOLALITY, URINE

Mnemonic

U OSMO

Synonym

U OSMO

Specimen Collection Requirements

Collect

Urine, random, one sterile acid-free container without preservatives.

Handling

Mix urine well in one container before removing aliquot.  If particulates are present, centrifuge before testing.

Preferred Volume

5.0 mL

Minimum Volume

1.0 mL

Transport

Refrigerated (2-8°C)

Stability

Room temperature (18-26°C): 24 hours; Refrigerated (2-8°C): 48 hours; Frozen (≤ -20°C): 2 weeks

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Osmometry (Freezing point depression)

Reference Values

Reference Values

500-800 mOsm/kg

CPT Codes

83935

Last Updated: Thursday, March 14, 2019 12:50:59 PM


Client Services: 503-413-1234