Normal blood oxygen levels mean that there is enough oxygen in your red blood cells to keep your vital organs and tissues functioning properly. You can easily check your blood oxygen levels with an ...

A recent study found that a key tool for reading blood oxygen can give inaccurate readings for Black and Hispanic patients. Pulse oximeters are placed on a person’s finger and can help monitor how ...

A retrospective analysis of over 7,000 patients with COVID-19 found that pulse oximeter devices — tools that measure oxygen levels in the blood and that are used in virtually every U.S. hospital — ...

Having a low level of oxygen in the blood is an early sign of worsening COVID. But not everyone gets obvious symptoms. For instance, some people can have low oxygen levels without getting short of ...