Blood sugar 7.5mmol/L depends on whether it is fasting blood sugar or two-hour postprandial blood sugar. If it is fasting blood sugar 7.5mmol/L, then this blood sugar is abnormal and belongs to abnormal blood sugar, and it can be diagnosed as type 2 diabetes. Because the normal range of fasting blood sugar is 3.9-6.1mmol/L, when fasting blood sugar is greater than 7.1mmol/L, it can be diagnosed as type 2 diabetes. If blood glucose 7.5mmol/l is two hours after meal, then this blood glucose value is normal and there is no problem, because the normal range value of two hours after meal is 4.4-7.8mmol/l, 7.5mmol/L is within this range and it is normal.