A fasting blood draw is not required for the Glycated Hemoglobin test. Glycated hemoglobin is formed by combining hemoglobin and glucose in red blood cells. Since the half-life of red blood cells is 120 days on average, its value can reflect the average level of blood glucose of the human body in the last 8 to 12 weeks, and it is a more stable test for assessing the effect of long-term blood glucose control. Combined with fasting blood glucose, postprandial blood glucose and other indicators, it can better assess the patient’s blood glucose situation or treatment effect. Fasting is not required to test glycated hemoglobin, and there is no need to stop taking oral hypoglycemic drugs or insulin. Low hemoglobin amounts due to blood loss, iron deficiency anemia, hemolysis, aplastic anemia, etc. may result in inaccurate results of the glycated hemoglobin test. Consult your doctor for specific precautions for the Glycated Hemoglobin Test.