Sarah Mitroff has worn many hats at CNET, including Senior Mobile Editor and Managing Editor of Health and Wellness. Currently, she is a freelance editor. Throughout her career, she's written about ...

A blood pressure monitor may be one of the most recognizable medical tools we have, but pulse oximeters are a close second for the most-used medical devices. Pulse oximeters, or pulse ox, measure the ...

Normal blood oxygen level is either 95%-100% SpO2 on an oximeter or 80-100 mm Hg from an ABG test. ABG tests are more accurate than pulse oximeters, which have a ...