These work, I guess. Trouble with all glucose meters is that you can test, use the exact same puncture, same blood source and get a very different reading. Says NOT to do so, but, well, curious, you know.so how to actually KNOW if the reading is correct? Don't know. Go more by how you feel. If you are feeling good, the numbers should be lower that when you feel bad. I still test, but feel sometimes the reading is very off.but that could be my meds aren't actually viable meds.Again, this, I have See full review