I have been in a running battle with my GP since I came to the UK 2 years ago. I was diagnosed Type 2 in Zimbabwe in 1995 and have been on Metformin for 10 years. My home glucometer test results in Zimbabwe were 5 fasting to 10 after meals, average 7-8, on a fairly strict diet (due to food shortages more than personal willpower!). I passed my medical records to my new UK GP and stayed on 1000mg metformin for 6 months. At my first review I was informed that I wasn't diabetic at all as my HBA1C was 5.0. After some discussion the Dr agreed to keep me on metformin and I went out and bought a new glucometer. To cut a long story short, my fasting blood sugar on the new glucometer averages 12, up to 14-15 after meals, and rarely below 10, but my HBA1C after 5 tests is still below 5.5. I am not happy with my blood sugar levels as I KNOW they are too high, but the Dr won't adjust my medication because of the "perfect" HBA1C. Can anyone explain the anomaly between glucometer and HBA1C results? I have calibrated the meter with test solutions from Abbott and it is spot on.