Normal range 95-100 % (0.95-1 fraction SI). Specimen: Arterial blood.
Also known as: oxygen saturation, arterial saturation.
95-100 %Critical value: read below
Reference range
Conventional%
95100
SIfraction
0.951
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for SaO₂ (Arterial Oxygen Saturation); those can be narrower than the band shown.
SaO₂ (Arterial Oxygen Saturation) reference range, specimen, and conversion details
Convert any SaO₂ (Arterial Oxygen Saturation) result between units on the unit converter.
What is the normal range for SaO₂ (Arterial Oxygen Saturation)?
The standard teaching reference range for SaO₂ (Arterial Oxygen Saturation) is 95-100 % in conventional units, or 0.95-1 fraction in SI units. This value is measured in arterial blood.
What is a critical SaO₂ (Arterial Oxygen Saturation) value?
For SaO₂ (Arterial Oxygen Saturation), the commonly taught critical (panic) value is: < 90% (hypoxemia). 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
What causes a high SaO₂ (Arterial Oxygen Saturation)?
The percentage of hemoglobin bound to oxygen; targets are usually ≥ 92-95%.
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