Jenn, is it in tablets? If they are coated, you need to take that into account - Cinco's on a coated AB right now and I'm sure it's raised his BGs. If it's liquid, they usually have some sugar in the suspension. I don't know about the actual medication. Hopefully someone that does know will come along and answer you.
I am a testaholic, so I undertand your urge to test often. There is no such thing as too much data, but you do have to take the kitty's comfort level into account. +6 is good.