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Test Code OSMO Osmolality, Plasma or Serum

Additional Codes

St. Luke's Compendium Code (Iatric): L303.1250

Performing Laboratory

St. Lukes Hospital Laboratory

Methodology

Freezing Point

Specimen Requirements


Submit only 1 of the following specimens:
 
Plasma
Draw blood in a green-top (lithium heparin) plasma gel tube(s). Spin down and send 1 mL of lithium heparin plasma refrigerated.
Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
 
Serum
Draw blood in a serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note:  1. Indicate serum on request form.
2. Label specimen appropriately (serum).

 

Unspun specimens must be transported at ambient temperature and arrive to the laboratory within one hour of draw.

Reference Values

278-301 mOsm/kg

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

CPT: 83930

LOINC: 2692-2