Ok, I spent ALL morning reading all of the post in this group. Wow, that took time. I did this because I was at a loss. I am always at around 80-85% fat 20-25%protein and 2-5% carbs. My net carb count RARELY goes over 10! I feel great,I love my BCP and can usually go til about 2 before I am hungry and eat my macros within a 6-8 hour time period.
I purchased the Greenwon meter and when I got it my first day I was blowing a .04. Peeing on sticks and still showing a high amount of ketones. After that the numbers would average from .01 to .03. Then all of the sudden .00 everyday, every time no matter what. I was sooooooo annoyed. I am following EVERYTHING. My pee sticks showed a moderate level.
Then after reading everything thing this morning I fixed the way I would breathe into it. I blew a .00 with my old way then 10 min later I did a more relaxed breath and stopped with 4 sec left on the countdown and it was a .04. So I went and peed on my sticks and I showed a moderate level.
So I think that the breathalyzer is just touchy. I think you have to really breathe into a certain way to get the correct read. I do believe it can be accurate. I think that if you KNOW you are really following everything you just need to find a way to tweak the way you do it to make sure you get an accurate reading.