I have been using the sticks, mostly because I bought them as per Dr.Atkin's book and have noticed a few odd things.

One glass of dry red wine and I don't register anything on the sticks anymore, almost immediately. Clearly that knocks me out of ketosis. Yet I can eat 7-8 cherries with no change in color at all. It is still fairly dark.

Does this make sense? It doesn't to me.