News Pulse oximeters are inaccurate in people with darker skin, studies suggest. Now the FDA is reviewing. November 3, 2022November 4, 2022 Orlando Mayorquin, USA TODAY Comments Off on Pulse oximeters are inaccurate in people with darker skin, studies suggest. Now the FDA is reviewing. Pulse oximeters became critical during the COVID-19 pandemic, but studies show they were less effective on people with darker skin.