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Osmolality, Serum : 677
Test CodeQOSMO or 677
CPT Codes
83930
Instructions
Serum separator tube (SST) or Plain red top tube.
Transport Container
Centrifuge the SST and transport. If plain red top tube, centrifuge and aliquot 1 mL (Min: 0.5 mL) serum into a standard transport tube.
Transport Temperature
Refrigerated.
Specimen Stability
After separation from cells: Room temperature: 4 days; Refrigerated: 5 days; Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, Grossly lipemic, Heparinized plasma, Grossly icteric
Methodology
Freezing Point Depression
Setup Schedule
Monday - Friday
Report Available
1-4 days (From receipt at performing laboratory)
Reference Range
278-305 mOsm/kg
Clinical Significance
Useful for the evaluation of fluid and electrolyte balance.
Performing Laboratory
Quest Diagnostics
