A pulse oximeter measures your blood oxygen levels and pulse. A low level of oxygen saturation may occur if you have certain health conditions. Your skin tone may also affect your reading. Pulse ...

Sales of at-home pulse oximeters have exploded during the pandemic, as worried patients keep close tabs on their blood oxygen levels. But while these devices are handy, they're often less effective on ...

Although a new study showed the devices are more error-prone in people with darker skin, doctors say they are still useful for anyone monitoring Covid-19 at home. By Tara Parker-Pope Home pulse ...