Blood oxygen is measured using a technique called Transmissive Pulse Oximetry. In this, a sensor projects red-colored and infrared light onto your skin. The light enters the blood vessels ...

In the case of a medical shock, low blood circulation or organ injury, arterial blood is not pulsatile enough to be used for pulse oximetry. The researchers tested their sensor in similar conditions ...

Learn about your blood oxygen level, including what it is, how to increase it, and more.

There’s a new wearable tech metric in town – and it’s all about blood oxygen. It might sound complicated and a little pointless, but pulse ox can reveal conditions like sleep apnea – and ...

A normal blood oxygen level is between 95%-100% SpO2 on a pulse oximeter. Here's how to use an oximeter at home.

Pulse oximetry can estimate the levels of oxygen in your blood. Find out how a pulse oximetry test works, what it's used for, and what the readings mean.

A blood oxygen level indicates how well the body distributes oxygen from the lungs to all of its cells. What does it mean to have low blood oxygen?

The new Apple Watch Series 6 has a sensor that measures the level of oxygen in your blood. Photograph: Apple All products featured on WIRED are independently selected by our editors.

The smartwatch's Blood Oxygen app lets you measure the oxygen level of your blood on-demand. It's been MIA for more than a year thanks to a patent spat, but it's back in action now.

Apple The new Apple Watch Series 6 comes with a blood oxygen sensor and an accompanying app to give you more ways to monitor your heart and respiratory health.