A glucose content value of 9 in the blood in case of fasting is high. The amount of sugar in the blood is called blood glucose. Most of the energy required for the activities of the tissues and cells in the body comes from glucose, so blood sugar must be maintained at a certain level to sustain the needs of the organs and tissues in the body. In normal people, the fasting blood glucose concentration is 3.9-6.1 mmol/L. A fasting blood glucose concentration of more than 7.0 mmol/L is called hyperglycemia. A blood glucose concentration of less than 3.9 mmol/L is called hypoglycemia, and a blood glucose concentration of less than 2.8 mmol/L is called hypoglycemia, so when the glucose content in the fasting state is 9, it is generally hyperglycemia. If the venous fasting blood glucose reaches 9mmol/L, it is a diagnostic indicator of diabetes. Diabetes can be diagnosed if the venous fasting blood glucose reaches 9mmol/L on both occasions. When the fasting blood sugar reaches 9mmol/L, the postprandial blood sugar may reach 12 to 13mmol/L or even higher. If left untreated, acute complications of diabetes may develop within a short period of time and can even reach diabetic ketoacidosis. If elevated blood glucose occurs, it is recommended to go to the hospital in time for early and regular treatment.