As per this reference [1] (that also has a lot of other useful info and links) > If you think you’ll fret a lot about whether you need to go the hospital, get

As per this reference [1] (that also has a lot of other useful info and links) > If you think you’ll fret a lot about whether you need to go the hospital, get a pulse oximeter ($20 on Amazon). Readings consistently below 90-94% are pretty bad and mean you should seek immediate treatment. [1]: https://slatestarcodex.com/2020/03/02/coronavirus-links-speculation-open-thread/ https://slatestarcodex.com/2020/03/02/coronavirus-links-spec...