How do the sensors measure oxygen (SPO2) levels?

Modified on Mon, 14 Nov, 2022 at 3:56 PM

Pulse oximetry measures the percent of blood hemoglobin that is oxygen rich. It functions by passing a red beam of light into the fingertip. The oxygen level is then determined by measuring how much light passes through the fingertip vs how much is absorbed. 

For more information on how Pulse Oximetry and Sensors work, check out this blog.

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