Personally, just to be safe, i wouldn't put the testing kit in my hand luggage for security checks. You only need one silly jobsworth and you could get loads of aggro. You don't need to test constantly, so when you unpack on the ship you'll then have it anyway. I know it shouldn't be a problem, but why take the risk when it's not something you need desperately to hand at all times. (I see you're not on insulin)
Pills aren't an issue, but the electrics on a meter will show up and if they look, they'll see the lancet. Again, 99.9% of the time it won't be an issue, but I wouldn't want the potential for a bit of aggro when i'm going on hols.
Enjoy!