Hi! I borrowed a meter to start with, the Sinocare Accu 2 it aided me to get down from 91 to 43. Then I asked the surgery if I could have one, as I found it helped an awful lot. They agreed because of my second test result & got given a Nexus Mini Ultra. I ran them side by side for a week or so, to see what was what & found the Sinocare was sometimes the same or at least within .5 but higher, only once or twice lower. It's the one I would have got had my surgery not been so good.
Good luck in your journey.
ETA Make sure you don't have soap residue on your fingers too, as that can give you a high shock.