Home
HelpTest Code SOSMO Osmolality, Serum
Performing Laboratory
Hunterdon Medical Center Laboratory
Useful For
- Evaluation of the body's water balance and its ability to produce and concentrate urine.
- Investigate low sodium (hyponatremia)
- Detect the presence of toxins in the body
- Monitor patients undergoing osmotically active drug therapies, e.g.mannitol.
Specimen Required
| Container/Tube | |
| Preferred | SST |
| Acceptable | PST |
| Specimen Volume | 3.0 mL |
| Minimum Volume | 1.0 mL |
Specimen Type
Serum or plasma
Specimen Transport Temperature
Ambient
Specimen Stability
Must be received < 24 hours.
Reject Specimen Due To
Specimen > 24 hours old.
Day(s) Test Set up
Monday through Sunday
Available STAT
Reference Values
| Age | Range |
| Neonate (0-1 year) | 266-295 mosm/kg |
| Child/Adult (1year-60 years) | 275-295 mosm/kg |
| >60 years | 280-301 mosm/kg |
Methodology
Freezing Point Depression
CPT Code
83930
Loinc Code
2692-2