For monitoring glucose control, A1c is currently reported as a percentage, and it is recommended that diabetics aim to keep their A1c below 7%. The report for your A1c test also may include an estimated Average Glucose (eAG), which is a calculated result based on your A1c levels. The purpose of reporting eAG is to help you relate your A1c results to your everyday glucose monitoring levels. The formula for eAG converts percentage A1c to units of mg/dL or mmol/L so that you can compare it to your glucose levels from home monitoring systems or laboratory tests.
It should be noted that the eAG is still an evaluation of your glucose over the last couple of months. It will not match up exactly to any one daily glucose test result. The American Diabetes Association has adopted this calculation and provides a calculator and information on the eAG on their web site.
The closer a diabetic can keep their A1c to 6% without experiencing excessive hypoglycemia, the better their diabetes is in control. As the A1c and eAG increase, so does the risk of complications.
In screening and diagnosis, some results that may be seen include:
A nondiabetic person will have an A1c result between 4% and 6%.
Diabetes: A1c level is 6.5% (47 mmol/mol) or higher.
Pre-diabetes (increased risk of developing diabetes in the future): A1c is 5.7% - 6.4% (39 - 46 mmol/mol)
*****The interesting part to me, that I did not know before, is the 4% - 6% . It's strange. I know for sure I am full blown diabetic, my numbers were high enough on the fasting blood glucose, but…according to this, an A1C of below 6% is like a non-diabetic. At diagnosis, my number was only 5.7, so my confusion is this: How can you have a high number on the glucose test, and yet have an A1C number as good as I had???
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