Does altitude significantly affect oxygen saturation readings?

I am not asking for medical advice. I am just curious, since I just recently got a Fitbit that tracks oxygen saturation, what a normal reading would look like at an altitude of 7,100 feet? My reading has an average of 93%, the lowest being 91%. Would this be a normal oxygen saturation at this altitude? For context, I have always lived in high altitude so it isn’t a sudden change or anything.