HbA1c (Glycated hemoglobin)
The Glycosylated Hemoglobin (HbA1c or A1c) test evaluates the average amount of glucose in the blood over the last 2 to 3 months. This test is used to monitortreatment in someone who has been diagnosed with diabetes. It helps to evaluate how well the person’s glucose levels have been controlled by treatment overtime. This test may be used to screen for and diagnose diabetes or risk of developing diabetes. Depending on the type of diabetes that a person has, how well theirdiabetes is controlled, and on doctor recommendations, the HbA1c test may be measured 2 to 4 times each year. The American Diabetes Association recommendsHbA1c testing in diabetics at least twice a year. When someone is first diagnosed with diabetes or if control is not good, HbA1c may be ordered more frequently.
Note: If a person has anemia, hemolysis, or heavy bleeding, HbA1c test results may be falsely low. If someone is iron-deficient, the HbA1c level may be increased. If a person has had a recent blood transfusion, the HbA1c may be inaccurate and may not accurately reflect glucose control for 2 to 3 months