Here's a word of advice, freely given: never open a bottle of wine directly after taken a blood sugar reading. Not unless you want the tiny pinprick on your finger to become a gushing torrent of sticky red liquid.
Or, if you are going to be as dumb as I was, make it a bottle of white wine. Because when that geyser starts going just as you uncork the wine, you want to make sure that there isn't any blood mixed in with it and that's difficult to do with a glass of Cabernet. I learnt that the hard way. Eeuk.