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Definition: SpO2


(Saturation of Peripheral Oxygen) SpO2 is the oxygen saturation in the bloodstream. The body normally maintains the required oxygen level from 94 to 100%, but any level below 90% can be problematic as well as dangerous if below 85%. A finger pulse oximeter measures SpO2 level as does a smartwatch that provides health monitoring.




Oxygen Level Measurement
Withings offers a variety of smartwatches that monitor health, including SpO2 levels, heartbeats per minute (BPM) and heart rhythm (see ECG). (Image courtesy of Withings.)