Normal human glycated hemoglobin is 4%~6%, glycated hemoglobin 6.2% exceeds the normal range, but does not meet the diagnostic criteria for diabetes, there may be abnormalities in glucose metabolism, not necessarily diabetes, need to improve the blood glucose test, and if necessary, can be carried out glucose tolerance test to further clarify the diagnosis. Glycated hemoglobin is used to assess the patient’s average blood glucose level in the 8 to 12 weeks prior to the test. Therefore, a glycated hemoglobin of 6.2% can only reflect the high average blood glucose level in the past 8 to 12 weeks, which suggests that the patient may have abnormal glucose metabolism, but it cannot be relied upon to diagnose diabetes mellitus. To diagnose diabetes, blood glucose test can be improved. If fasting blood glucose is higher than or equal to 7.0mmol/L or random blood glucose is higher than or equal to 11.1mmol/L, and there are symptoms of diabetes three more than one, it is considered to be diabetes, and if there is no typical symptom of diabetes, it can be confirmed by retesting on another day. In addition, an oral glucose tolerance test can be performed. If the oral glucose tolerance test reveals that the two-hour blood glucose is greater than or equal to 11.1 mmol/L, diabetes is also considered. Patients are advised to complete the relevant examinations to assess the situation and determine whether they are suffering from diabetes through the examination report.