@ucheonyex: A1c is a measurement, not a calculation. Your measured A1c tells you how much glucose has attached to your red blood cells. A calculated A1c (eA1c) is only an estimate based on your average blood sugar. No matter how it’s reported, a higher A1c usually means your body isn’t moving enough glucose out of your bloodstream. In prediabetes and type 2 diabetes, this is most often because your tissues have become more resistant to insulin, so more glucose stays in the blood. #A1c #BloodSugar #Prediabetes #Type2Diabetes #InsulinResistance