Usually, there is no concept of graded diabetes, so a fasting blood glucose of 8~9mmol/L can only indicate that the patient’s fasting blood glucose value is high this time, and it is recommended to seek medical treatment in time. Generally speaking, normal people’s fasting blood glucose is maintained between 3.9~6.1mmol/L, while the blood glucose level is at 8~9mmol/L, which indicates that the blood glucose value is on the high side, and there may be abnormalities of pancreatic islet function. It is important to note that there is no clear grade distinction for diabetes, and it is often necessary to determine the severity of the condition through blood glucose levels, complications and other conditions. Long-term poor control of blood glucose levels may jeopardize the health of the eyes, cardiovascular and kidney, so it is important to pay attention and take medication to control blood glucose as prescribed by your doctor.