Glycated hemoglobin mainly reflects the average blood glucose level in the last 2 to 3 months. Glycated hemoglobin 6.6% is high for normal people and may be serious; for diabetic patients it is within the target range and generally not serious. Due to different examination methods and reagents, the reference indexes of each hospital are different and need to be analyzed specifically. 1. The normal value of glycated hemoglobin for normal people is between 4% and 6%. If it is greater than 6%, it means that the blood glucose level is elevated, which may be caused by diabetes, and it is recommended to consult a doctor in time for a clear diagnosis. 2. For patients who have been diagnosed with diabetes in the past, generally the glycated hemoglobin needs to be controlled at 7.0% or less, so a glycated hemoglobin of 6.6% meets the control goal, and can be continued with the current treatment regimen. If abnormal glycosylated hemoglobin is detected, it is recommended to consult a doctor for further examination and treatment as prescribed by the doctor, so as not to delay the condition.