So I've read on r/keto that you can use a cheap breathalyzer to test for acetone on the breath which indicates your level of ketosis. The trick is to use a cheap, crappy alcohol breathalyzer to test and not an expensive fancy one. The cheap ones can't tell the difference between alcohol and acetone, the good ones (like the…
Might want to put their username in your post in case someone posts before you hit the button.
