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Test Code OSMO Osmolality, Serum

Performing Laboratory

Northwell Health Laboratories


Freezing Point Depression

Reference Values

275-300 mosmol/kg

Test Classification and CPT Coding


Day(s) and Time(s) Performed

Monday through Sunday

Physician Office Specimen Requirements

Specimen must arrive within 24 hours of draw.


Container/Tube:  Gold-top tube(s)

Specimen:  1 mL of serum

Transport Temperature:  Refrigerate