Fasting blood sugar of 8.2 mmol/L, whether it is considered diabetes or not has to be looked at in a comprehensive manner. If the venous blood sugar is accompanied by symptoms of polyuria, polydipsia, polyphagia, and weight loss, the diagnosis of diabetes is made. And if there are no symptoms, but simply a single fasting blood glucose of 8.2mmol/L, further examination and evaluation is required. Diabetes is diagnosed when fasting blood glucose exceeds 7mmol/L or more and reaches 8.2mmol/L with symptoms of diabetes, such as polyuria, polydipsia, polyphagia, and weight loss. And if a simple one-time fasting blood glucose elevation, and there are no symptoms, you need to seek medical attention, and review the fasting blood glucose again, or the two-hour postprandial blood glucose, or glucose tolerance test to determine whether it is diabetes or not. If you find that your fasting blood sugar is elevated, it is recommended that you go to the endocrinology department of a regular hospital in a timely manner.