# What finger can I use for the HST pulse ox

**URL:** <https://community.sleepdoctor.com/t/what-finger-can-i-use-for-the-hst-pulse-ox/32>\
**Category:** Sleep Testing\
**Created:** [January 20, 2025, 5:00am UTC](https://community.sleepdoctor.com/t/what-finger-can-i-use-for-the-hst-pulse-ox/32 "2025-01-20T05:00:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![AmaroSpritz](https://avatars.discourse-cdn.com/v4/letter/a/e19b73/32.png) [@AmaroSpritz](https://community.sleepdoctor.com/u/AmaroSpritz)\
**Post date:** [January 20, 2025, 5:00am UTC](https://community.sleepdoctor.com/t/what-finger-can-i-use-for-the-hst-pulse-ox/32/1 "2025-01-20T05:00:00Z")

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Hey, need to test for sleep apnea, ordered a HST. Does it matter which finger I put the pulse ox on to get the most accurate reading possible?

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**Author:** ![IanIRL](https://avatars.discourse-cdn.com/v4/letter/i/a698b9/32.png) [@IanIRL](https://community.sleepdoctor.com/u/IanIRL)\
**Post date:** [January 22, 2025, 3:44am UTC](https://community.sleepdoctor.com/t/what-finger-can-i-use-for-the-hst-pulse-ox/32/2 "2025-01-22T03:44:07Z")

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I’m not sure how much it really matters, but I just used my index finger.