Normal blood glucose fluctuates to a certain extent, and the normal values are: fasting blood glucose <6.1mmol/L and two-hour postprandial blood glucose <7.8mmol/L. If the fasting blood glucose is between 6.1-7.0mmol/L, it is known as impaired fasting glucose; if the postprandial blood glucose is between 7.8-11.1mmol/L and fasting glucose is <6.1mmol/L, it is known as impaired glucose tolerance; and if fasting blood glucose is between 6.1-7.0mmol/L and two-hour postprandial blood glucose is between 7.8-11.1mmol/L, it is known as impaired glucose regulation. blood glucose between 6.1-7.0 mmol/L and two-hour postprandial blood glucose between 7.8-11.1 mmol/L is called impaired glucose regulation. All three of these conditions are pre-diabetic, and some patients will evolve into type 2 diabetes.