What is glycosylated hemoglobin? Do people with diabetes need to test glycosylated hemoglobin?

The main manifestation of diabetic patients is the increase in blood glucose level, but the time for the patient to measure blood glucose, physical condition and whether or not they eat will affect the blood glucose measurement, resulting in the measured value is not stable enough. Glycated hemoglobin is the "gold standard" for diagnosing diabetes. Its value reflects the average blood glucose level of the past 90-120 days. It can be used to infer the patient’s recent blood glucose control status. For diabetic patients, in addition to daily blood glucose monitoring, it is better to check the value of glycosylated hemoglobin in about 3 months to see if the blood sugar control is good in the recent period, and whether it is necessary to increase or decrease the medicine.