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Osmolality, Serum
Test Code677
Alias/See Also
LAB107
*Backup for in-house Serum Osmo test
*Backup for in-house Serum Osmo test
CPT Codes
83930
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 5 days
Frozen: 14 days
Refrigerated: 5 days
Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric • Heparinized plasma
Methodology
Freezing Point Depression
Setup Schedule
Morning Mon-Sat
Report Available
1-2 days
Reference Range
278-305 mOsm/kg
Clinical Significance
For the evaluation of fluid and electrolyte balance.
Performing Laboratory
| Quest Diagnostics Nichols Institute-Chantilly VA |
| 14225 Newbrook Drive |
| Chantilly, VA 20151-2228 |