And, for bonus points, how are they made?
These seem like an awfully important test piece. I’m pretty sure they’re just checking for glucose with some enzyme or something. But who knows, maybe its something simple or everyday? Are all brands using the same materials?
All the test strips I’ve ever used hold the blood at the opposite end to the machine. The blood is intentionally kept away and on something that can easily be disposed of.
As far as I can tell, the bulk of the testing strip is a conductor to take a signal from the end with the blood to the tester, which makes it seem like there’s some sort of reaction on the blood end.