# Low Oxygen at Night, but no Sleep Apnea **URL:** \ **Category:** Introductions and Random Discussion\ **Created:** [September 30, 2025, 2:03pm UTC](https://community.sleepdoctor.com/t/low-oxygen-at-night-but-no-sleep-apnea/460 "2025-09-30T14:03:05Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Lynneclouse](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@Lynneclouse](https://community.sleepdoctor.com/u/Lynneclouse)\ **Post date:** [September 30, 2025, 2:03pm UTC](https://community.sleepdoctor.com/t/low-oxygen-at-night-but-no-sleep-apnea/460/1 "2025-09-30T14:03:05Z")
I was diagnosed with mild sleep apnea using a home sleep study about 5 yrs. ago. I do not sleep well with my CPAP and so decided to be retested in a sleep study within a facility. I found out I do NOT have sleep apnea, what I do have is a very low oxygen level while sleeping only (80%). (I get my oxygen tested regularly during the day before having a weekly allergy shot). I went to an ENT who said I had no obstruction to my airway passages. Now what? ---
**Author:** ![robertson](https://yyz1.discourse-cdn.com/flex003/user_avatar/community.sleepdoctor.com/robertson/32/146_2.png) [@robertson](https://community.sleepdoctor.com/u/robertson)\ **Post date:** [November 19, 2025, 12:06pm UTC](https://community.sleepdoctor.com/t/low-oxygen-at-night-but-no-sleep-apnea/460/2 "2025-11-19T12:06:47Z")
It sounds like you might need to look into other causes for low oxygen levels. Maybe get a second opinion or talk to a pulmonologist. They could help figure out what’s going on during sleep. ---
**Author:** ![Soltren234](https://avatars.discourse-cdn.com/v4/letter/s/3bc359/32.png) [@Soltren234](https://community.sleepdoctor.com/u/Soltren234)\ **Post date:** [February 3, 2026, 5:12am UTC](https://community.sleepdoctor.com/t/low-oxygen-at-night-but-no-sleep-apnea/460/3 "2026-02-03T05:12:01Z")
Consult a pulmonologist, it could be nocturnal hypoxemia.