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 dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s ...

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 ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give higher readings for patients with darker than lighter skin tones, finds the ...

Add Yahoo as a preferred source to see more of our stories on Google. From CBC to CMP and beyond, blood test panels provide essential information to health practitioners. angelp/iStock via Getty ...

Pulse oximeters use light to measure how much oxygen is in a person’s blood. For most people, a normal pulse oximeter reading is between 95% and 100%, researchers said in background notes. Readings ...