BY AMY CAMPBELL, MS, RD, LDN, CDCES | MARCH 3, 2021 Call it what you will: hemoglobin A1C, glycosylated hemoglobin, HbA1c or just “A1C,” these numbers, known as A1C levels, play a huge role in how your diabetes is managed. It’s also used to diagnose diabetes, as well as prediabetes. Your A1C is a blood test that provides information about...