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.

Medical terms like blood oxygen, spO2 levels, and oxygen saturation became more popular during the peak COVID-19 pandemic. The Delta variant had taken a massive toll on the population, leading to ...

Normal blood oxygen levels for healthy adults are between 95% and 100%. Hypoxemia symptoms include shortness of breath, fatigue, and bluish-colored skin. Some health conditions and exercise can affect ...