All tests · Inflammatory & Other Chemistry
Inflammatory & Other Chemistry
Normal range 275–295 mOsm/kg (275–295 mmol/kg SI). Specimen: Serum.
Also known as: serum osmolality.
| 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.
A 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.
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