Sanford Laboratory Bismarck
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Test name:


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.
Transport: Refrigerated
Specimen minimum
0.1 mL
Performed: Daily (Monday—Sunday)
Reference value: 280-300 mOsm/kg
Method: Freezing point depression

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