Diabetes examination can be done in general community hospitals and endocrinology departments of hospitals above the county level. The main items of diabetes examination and laboratory tests are as follows: firstly, fasting and 2h post-meal venous blood glucose are measured. Secondly, the glycated hemoglobin test, which indicates the average level of blood glucose control in the past 2-3 months, is also more meaningful for the diagnosis of diabetes. In addition, urinalysis is performed to determine whether the patient has protein, ketone bodies or several plus signs of urine sugar in the urine.