@larand When I set up this glucometer, I could configure what a "low" was. The default is 70 mg/dL and I went with that.
There is some debate about what a "dangerous" low is. Regardless, when I started fasting a more than a year ago, I stepped up my blood glucose monitoring to make sure it didn't get too low.
I've had readings in the 70s before, but this is my first legit one below 70. Of course, this is also the first time I've fasted for more than 3 days (currently at 84 hours).
// @matigo