Normal Ranges Most people have a normal resting pulse oximetry reading for oxygen saturation (SpO2) between 95% and 100%. This shows that your blood has an appropriate amount of oxygen.

The data also showed that 10.2% of Black patients had pulse oximeter readings at least 15 percentage points higher than their blood gas readings, compared with 7.3% of White patients.

Patients with a fingertip pulse-oximeter reading of 94 percent or more but whose blood tests showed lower levels were deemed to have an unrecognized need for Covid therapy.