Hemoglobin A1C is a number that indicates your average blood sugar for the previous two to three months. If you have a hemoglobin A1C of 5.7 to 6.4 percent, you have prediabetes. If your hemoglobin ...
Hemoglobin A1c (A1C) estimates your average blood sugar over about 3 months. It helps guide diabetes goals and treatment changes. A1C has been a cornerstone of diabetes management since the 1990s. The ...