Glucose in the blood is called blood glucose, in general, clinically do not deliberately test the blood glucose value half an hour after meals, can test random blood glucose value, less than 11.1mmol / L is the normal reference range. The normal reference range of fasting blood glucose is 3.9-6.1mmol/L, and the normal reference range of two-hour postprandial blood glucose is less than 7.8mmol/L. Since carbohydrate-containing food will be consumed during meals, the two-hour postprandial blood glucose will be higher than the fasting blood glucose. If the random blood glucose value is not within the normal range, and there are symptoms such as drinking, eating and urinating, you need to seek medical treatment in time.