Sanford Laboratory Bismarck
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Test name:

Osmolality

   
Test code: OSMO
   
Order code: BLOD0617
   
CPT: 83930
   
Specimen type: Serum or plasma
   
Container: Serum (red) gel or lithium heparin (green) gel
   
Specimen volume: 0.5 mL
   
Instructions: Serum (red) gel specimen preferred. Lithium heparin (green) gel specimen acceptable.
   
Note:
   
Transport: Refrigerated
   
Specimen minimum
volume:
0.1 mL
   
Performed: Daily (Monday—Sunday)
Reference value: 280-300 mOsm/kg
   
Method: Freezing point depression
   

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