# Monitoring oxygen levels while sleeping

**URL:** <https://community.sleepdoctor.com/t/monitoring-oxygen-levels-while-sleeping/37>\
**Category:** Sleep Testing\
**Created:** [January 20, 2025, 5:00am UTC](https://community.sleepdoctor.com/t/monitoring-oxygen-levels-while-sleeping/37 "2025-01-20T05:00:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![debbiedandelion](https://avatars.discourse-cdn.com/v4/letter/d/ea666f/32.png) [@debbiedandelion](https://community.sleepdoctor.com/u/debbiedandelion)\
**Post date:** [January 20, 2025, 5:00am UTC](https://community.sleepdoctor.com/t/monitoring-oxygen-levels-while-sleeping/37/1 "2025-01-20T05:00:00Z")

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I understand AHI is the standard way of testing for sleep apnea at home, but would it not be more valuable to monitor actual oxygen levels while sleeping? Does such a test exist?

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**Author:** ![jetskibill](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@jetskibill](https://community.sleepdoctor.com/u/jetskibill)\
**Post date:** [February 27, 2025, 8:05pm UTC](https://community.sleepdoctor.com/t/monitoring-oxygen-levels-while-sleeping/37/2 "2025-02-27T20:05:40Z")

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my question is similar. Why not monitor blood oxygen instead of using a CPAP machine. It would certainly be less aggravating than CPAP therapy

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**Author:** ![sleepyjerm](https://avatars.discourse-cdn.com/v4/letter/s/74df32/32.png) [@sleepyjerm](https://community.sleepdoctor.com/u/sleepyjerm)\
**Post date:** [March 14, 2025, 5:09pm UTC](https://community.sleepdoctor.com/t/monitoring-oxygen-levels-while-sleeping/37/3 "2025-03-14T17:09:25Z")

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Oxygen monitoring only tracks the effects of sleep apnea, it doesn’t treat it. CPAP prevents airway collapse, ensuring proper breathing and better sleep. Even with normal oxygen levels, untreated apnea can still cause health risks like high blood pressure and heart disease. Monitoring helps, but CPAP treats the problem.