The full name of HbA1c is glycated hemoglobin, which mainly reflects the average blood glucose level of patients in the past 2-3 months, referring to the product of hemoglobin binding with sugar in red blood cells in the blood, unlike fingertip blood glucose and intravenous blood glucose, both of which reflect the current blood glucose level of patients, while glycated hemoglobin responds to a longer range of blood glucose level, which is not affected by a particularly high or low blood glucose, so it is often It is used to assess the glycemic control of diabetic patients in the recent period. Its normal value is 4%-6%, and the clinic generally requires patients to control glycation below 8%. If glycation exceeds 9%, the patient’s recent blood glucose control is poor and further adjustment of medication is needed. In some countries, glycosylated hemoglobin is also used as an indicator to diagnose diabetes, but in China, because many small hospitals do not have such equipment, glycosylated hemoglobin has not been used to diagnose diabetes, but is mainly used to assess the patient’s recent blood sugar control.