I mentioned in my post entitled “Should You Utilize A Home Pulse Oximeter During COVID-19?” that I had purchased a home pulse oximeter and had used it to monitor my oxygen saturation (SpO2) levels during the time I had COVIDesque symptoms recently. Personally, I felt the device was returning accurate information and was helpful in…

How Accurate Are Pulse Oximeters Labeled Not For Medical Use? — The Skeptical Cardiologist

And if you decide not to read Dr. Pearson’s entire article here’s your take home message:

During my illness I would measure my SpO2 twice daily and at times when I felt short of breath. When I felt the worst I noted the SpO2 had dropped to 95%. Within 24 hours it rebounded and I recorded >96% thereafter.

If the SpO2 had progressively dropped and consistently showed values <90% I would have contacted my primary care physician and described the constellation of signs (pulse rate, respiratory rate, BP, and SpO2) and symptoms (shortness of breath, cough, headache, fatigue, etc.) that I had and seek his advice on what to do

https://theskepticalcardiologist.com/2020/09/12/how-accurate-are-pulse-oximeters-labeled-not-for-medical-use/

I encourage all to read the entire article, links provided above.

Thanks for the research Dr. Pearson.