For the life of me I can't understand what is wrong with your last set of figures! If you convert them to mmol/l the difference is miniscule. It is a rise of 0.3mmol/l on approx a 3 month average, and still perfectly in the non-diabetic range. I think you may find most of us fluctuate by a little bit each time. Have you done an OGTT at all? A few of us did one at home a while ago. They are quite revealing.