A healthy blood oxygen level is 95% to 100% on a pulse oximeter (SpO2) or 75 to 100 mm Hg on an arterial blood gas test. A reading below 95% is considered low and may warrant medical attention. Your ...
Put simply, SpO2 is a measure of blood oxygen saturation. The more oxygen you have in your blood, the higher your SpO2 levels are going to be. Seeing as our bodies need oxygen to survive, we can ...