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Osmolality, Serum
MessageTest performed at York Hospital Laboratory.
Test Code
OSMO
CPT Codes
83930
Preferred Specimen
1mL Serum
Minimum Volume
0.5mL Serum
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 4 days
- Refrigerated: 5 days
- Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross icteric; gross hemolysis; gross lipemic; heparinized plasma
Methodology
Freezing point depression
Report Available
Daily Report – same day
Reference Range
278-305 mOsm/kg
Clinical Significance
For the evaluation of fluid and electrolyte balance
Performing Laboratory
York Hospital