Diabetes mellitus is diagnosed when the glycosylated hemoglobin is ≥6.5% with the clinical signs of “three more and one less”; diabetic patients generally need to be controlled below 7.0%. 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 reflects the average level of blood glucose in the body in the past 8 to 12 weeks. Normal glycosylated hemoglobin ranges from 4.0% to 6.0%, and diabetes is diagnosed when the glycosylated hemoglobin is ≥6.5% and there are clinical signs of “three more and one less”. Diabetic patients generally need to control their glycosylated hemoglobin below 7.0%, and need to set goals for glycemic control according to their individual conditions. You should consult your doctor for the results of your hemoglobin test.