Someone who is not diabetic will have about five percent of their hemoglobin glycated. This means that if your A1C is below 5.7, you don’t have to worry. A normal A1C level is below 5.7 percent; 6.5 percent or above indicates diabetes; 5.7 to 6.4 percent is prediabetes.To monitor your overall glucose control, diabetics should have an A1C at least twice a year.n A1C test allows doctors to examine glucose levels over a two-to three-month period and can be a useful tool in judging the effectiveness of a treatment plan. Diabetics used to depend only on urine tests or daily finger sticks to measure their blood sugars.