I'm really concerned about my friend's oxygen saturation levels. They've been all over the placesometimes it starts at 76 and then jumps up to 93 or 94 after a few minutes. He doesn't have any symptoms and seems fine otherwise, but his family is worried because their levels are all at 99 spO2. Is it normal for oxygen levels to fluctuate like this in someone who's not showing any symptoms? Should we consider getting him a COVID test or something just to be sure?

it is normal for a person , don't worry. no need of any tests