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Inflammatory & Other Chemistry
Normal range 275-295 mOsm/kg (275-295 mmol/kg SI). Specimen: Serum.
Also known as: serum osmolality.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Osmolality, Serum; those can be narrower than the band shown.
| Specimen | Serum |
|---|---|
| Conventional range | 275-295 mOsm/kg |
| SI range | 275-295 mmol/kg |
| Conversion factor | ×1 (conventional → SI) |
| Critical value | < 265 or > 320 mOsm/kg |
| Panel | Inflammatory & Other Chemistry |
Convert any Osmolality, Serum result between units on the unit converter.
The standard teaching reference range for Osmolality, Serum is 275-295 mOsm/kg in conventional units, or 275-295 mmol/kg in SI units. This value is measured in serum.
For Osmolality, Serum, the commonly taught critical (panic) value is: < 265 or > 320 mOsm/kg. Critical results are reported to the provider immediately under your facility's policy.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Above the range
Below the range
At the bedside
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