A PaO2 test measures partial pressure of oxygen, or PaO2—the oxygen pressure in arterial blood. The PaO2 reflects how well oxygen is able to move from the lungs to the blood. It is often altered by ...

As of this week, all Fitbit Charge 3, Ionic, Versa, Versa Lite, and Versa 2 users will be able to use the recently announced Estimated Oxygen Variation graph in the Fitbit app. This feature has ...

A blood gas test measures oxygen and carbon dioxide levels in the blood. The test can also show blood pH levels and lung function. It is also called an arterial blood gas test or a blood gas analysis.