A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.

The pulse oximeter is currently one of the most essential medical devices. This health instrument can actually help you during the ongoing COVID-19 pandemic. In this photo illustration, a young woman ...

Over the past two years, the pulse oximeter has become a crucial tool for tracking the health of COVID-19 patients. The small device clips onto a finger and measures the amount of oxygen in a ...

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A pulse oximeter is worn by Brown University professor Kimani Toussaint. The devices have been shown in research to produce inaccurate results in dark-skinned people, and Toussaint's lab is developing ...