Home sleep study said moderate sleep apnea w/severe oxygen saturation <70 & in-clinic study said no sleep apnea & perfect oxygen levels. which right?

My reaction: Advise you to sit down with your doctor and go over both studies in full detail, as one of these is clearly WRONG. Although I would favor a clinic outcome due to presence of skilled personnel, I cannot clarify the outcomes from this perspective. Good luck with this.

Sleep MD: Make sure you are being evaluated by a board certified sleep MD. Discuss findings and get recommendations.