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Test Code OSMO Osmolality, Serum

Important Note

Centrifuge and separate cells after clot formation and within 1 hour of collection. 

Additional Codes

Epic: LAB107

Specimen Required

Specimen Type: Serum

Collection Container/Type

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Centrifuge and separate cells after clot formation and within 1 hour of collection. 

Specimen Minimum Volume

0.10 mL

Specimen Stability

Room temperature: 24 hours

Refrigerated: 24 hours

Frozen: Not defined

Reference Range

280 - 300 mOsm/kg

Rejection Due To

Samples not centrifuged within 1 hour of collection, unlabeled, mislabeled, wrong tube type, hemolyzed, QNS, exceeds specimen stability requirements.

Day(s) and Time(s) Performed

Daily

Report Available

1 day

LOINC

2692-2