HbA1c (glycated hemoglobin) measures your average blood sugar level over the past 2 to 3 months. It reflects how much glucose has attached to hemoglobin in your red blood cells.
Category: Diabetes & Glycemic
Also known as: hba1c, a1c, hemoglobin a1c, glycated hemoglobin, glycosylated hemoglobin
Reference range: 4–5.6 % (Source: ABIM)
Standard unit: %
High values may indicate
High HbA1c levels may indicate poorly controlled diabetes, prediabetes, or increased risk of diabetic complications such as nerve damage, kidney disease, and cardiovascular disease.
Low values may indicate
Low HbA1c levels are generally normal but may sometimes indicate frequent low blood sugar episodes (hypoglycemia), hemolytic anemia, or blood loss.