How a small device called a pulse oximeter measures blood oxygen levels

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.
CNET

Need a pulse oximeter? These models are still in stock, starting at $24

Rick Broida is the author of numerous books and thousands of reviews, features and blog posts. He writes CNET's popular Cheapskate blog and co-hosts Protocol 1: A Travelers Podcast (about the TV show ...
The Washington Post

What is a pulse oximeter, and does the coronavirus pandemic mean you need one?

Before the coronavirus pandemic, most Americans had heard about pulse oximeters only via TV shows where EMTs shout out a patient’s “pulse ox” — or measure of oxygen in the blood. But when multiple ...
Staten Island Advance

Coronavirus: Why you may want to buy a pulse oximeter

STATEN ISLAND, N.Y. -- With tens of thousands of New York City residents testing positive for the coronavirus (COVID-19), a device you can find at your local drug store could help those with confirmed ...