Home
HelpTest Code UOSMS Osmolality, Serum
Specimen Required
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Useful For
Evaluating acutely ill or comatose patients
Method Name
Freezing Point Depression
Reporting Name
Osmolality, SSpecimen Type
SerumSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 7 days | ||
| Ambient | 24 hours |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
Reference Values
275-295 mOsm/kg
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
83930
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| UOSMS | Osmolality, S | 2692-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| UOSMS | Osmolality, S | 2692-2 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Day(s) Performed
Monday through Sunday