Experts say Apps aren’t a reliable way to measure Blood Oxygen Levels
Doctors say one of the best ways to monitor patients with COVID-19 is by tracking their blood oxygen levels, which can show when they have dangerous breathing problems — even if they don’t feel short of breath. But along with toilet paper and digital thermometers, devices that measure those levels, called pulse oximeters, are hard to find. They’re either sold out or taking weeks to ship from major retailers. With […]