Sheena Foster Profile Photo

Sheena Foster

Sheena Foster is an award-winning journalist who has written and reported for ABC and NBC News affiliates, The Tampa Tribune, The Island Packet, Essence, and, most recently, theGrio, where she covered the racial disparity in Silicon Valley. She's also a proud NYC native, foodie, and avid runner.
Close-up of a man in hand measuring the oxygen level in his blood with a pulse oximeter Tout icon

What Is a Normal Oxygen Level and How Can I Check Mine?

A pulse oximeter may be a helpful tool to monitor oxygen levels at home if you suspect you have Covid-19. Here's what doctors want you to know about normal oxygen levels and those that might be a concern.