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.

Apple has your health in mind when it comes to the Apple Watch, which is why it added a blood oxygen sensor starting with the Series 6. This technology can tell if you’re getting enough oxygen to your ...

Sleep apnea can cause low blood oxygen during sleep. Low oxygen levels from sleep apnea can lead to health issues like fatigue and shortness of breath. If blood oxygen levels drop below 92%, medical ...