From your comment:
"...this process basically requires two things at the same time -- very high blood sugar levels and very high blood ketone levels. If you only have one or the other, there's little danger."

Thank you for this. I registered 10 on my Ketoscan the other night and while I felt fine, I was a little surprised that I would get that high and wondered where that put me in the ketosis range. I have never been diagnosed as diabetic but I have felt I may have been. Still, I'm sure my bg is no higher than 110, what with my carb level.