I have had 3 Glucolab meters and have now reverted back to my old One Touch meter. The first meter I had came up with odd codes, which wasn't in the booklet and Neon Diagnostics who supply the meters took this one back and replaced it. They did not know what these codes were either. The second meter didn't last very long either, my first reading of the morning said my blood sugar was so low it could not give me a reading, I knew this was incorrect as I felt fine and re-did it and was given a reading of 11 and did another one straight away and it came out as 11.3. I contacted Neon Diagnostics again and they replaced it with my third meter. This one lasted two days. It did exactly the same and gave incorrect readings. As this can be extremely dangerous, especially if you think your reading is high and give yourself insulin I spoke to my Diabetic nurse again and she suggested I go back to my old meter (which I'd had for some time and never had a problem with it) and they would supply me with the test strips. JUST BE CAREFUL - if you think the reading is wrong, retest yourself!