I got one of the 10-test ones ages ago, although I knew I would never buy it again (would need to mortgage the house!). You reuse the plastic bit in the pic (it stores in the fridge with the consumables) and on D-Day open two packets that house the blood collector and the thingy that slots into that plastic bit to take the blood and do the test respectively. There's another thread on this somewhere, where I put a link to the manufacturer's video of how to do it. My tests have usually produced readings of 0.1 or 0.2 variance from the one the doc did (lower in fact) but the last one I did was 0.6 different (also lower) and that worried me a bit. As I say, it was good to try but I am more confident now and less likely to distrust the doc. So when it runs out, that will be it. If I order anything else from abroad and pay lots of postage it will be a jigsaw from Canada that I covet, not a medical aid! The money should be spent on treats that we "are" allowed.
DG