Blood oxygen levels refer to the amount of oxygen circulating in the blood. Normal blood oxygen levels fall between 75 and 100 millimeters of mercury (mm Hg) on arterial blood gas (ABG) test results.

A pulse oximeter measures your blood oxygen levels and pulse. A low level of oxygen saturation may occur if you have certain health conditions. Your skin tone may also affect your reading. Pulse ...

For decades, receiving oxygen treatments for conditions such as COPD meant being tethered to bulky canisters of compressed oxygen, which limited mobility and independence. An atmosphere of pure oxygen ...

A healthy blood oxygen level is 75–100 mm Hg, or 95–100%. Low blood oxygen levels, known as hypoxemia, may be a cause for concern. Your blood oxygen level is a measure of how much oxygen your red ...