One of the most important metrics on a Fitbit tracker is the Estimated Oxygen Variation—and now that every tracker is fitted with an SpO2 sensor, everyone can take advantage. Blood oxygen may be used ...

Range is still a big deciding factor for electric-vehicle buyers, so we’ve done the legwork of gathering every EV on sale with the longest driving ranges. The main criterion for this list is that the ...

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Steffini Stalos, DO, FCAP, is a pathology and lab medicine physician. She is also the chief medical officer of the lab consultancy firm Blood Associates, LLC. Mean corpuscular hemoglobin concentration ...

There’s no question that the range can be an intimidating place, especially for new golfers. When you hit an errant shot, it can feel like hundreds of eyes are staring, judging your swing. But in ...

Editors’ Note: On December 17, 2020, the New England Journal of Medicine published a research letter, “Racial Bias in Pulse Oximetry Measurement,” prompted by this essay. Read the medical study here ...