That is, they could be struggling for air despite normal pulse oximeter results. The potential for racial disparities in pulse oximetry was first revealed in a study published 34 years ago.

A pulse oximeter is a small device that clips onto ... to help boost your blood oxygen levels to within a normal range.

Oximeters have become an essential household device to keep your blood oxygen levels (SpO2) in check. Dipping SpO2 levels is one of the key indicators of the COVID-19 infection in people.

That is, they could be struggling for air despite normal pulse oximeter results. The potential for racial disparities in pulse oximetry was first revealed in a study published 34 years ago.