what is a1c
A1C and eAG. The A1C test gives you a picture of your average blood glucose (blood sugar) control for the past 2 to 3 months. The results give you a good idea of how well your diabetes treatment plan is working.he American Diabetes Association suggests an A1C of 7%, which is an eAG of 154 mg/dl, but a more or less stringent glycemic goals may be appropriate for each individual. Use the converter below to translate your A1C percentage into an eAG number, or vice versa.