We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Ellen Lee Ellen Lee is a writer focused on parenting and health gear. She has ...

A pulse oximeter measures blood oxygen levels at home and in healthcare settings. Abnormally low readings on a pulse oximeter might require medical care, especially if they are below 92%. Skin color ...

Like thermometers, toilet paper, and face masks before them, pulse oximeters — your doctor likely clipped one on your finger during your last annual physical and you haven’t thought of it since — have ...