Postprandial blood glucose is generally measured 2 hours after a meal. Pre-meal blood glucose 7.2mmol/L and 2-hour postprandial blood glucose 9.2mmol/L are not normal. Overnight fasting 8 to 10 hours of preprandial blood glucose belongs to the fasting blood glucose, the normal range should be referred to 3.9 to 6.0 mmol / L; if it is the blood glucose before lunch or dinner, three to four hours from the last meal, at this time, the normal blood glucose should be close to the fasting blood glucose. So preprandial blood sugar 7.2mmol/L is not normal. Postprandial blood glucose generally refers to 2 hours after meals, 2 hours after meals, blood glucose less than 7.8mmol / L is normal, so the postprandial blood glucose 9.2mmol / L is also not normal. If the measurement of other time points of postprandial blood glucose, should be analyzed on a case-by-case basis. However, for diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol / L ~ 7.0mmol / L, non-fasting blood glucose does not exceed 10.0mmol / L, according to the specific situation to assess the situation of glycemic control. It is recommended to visit a hospital and ask your doctor to make a judgment when abnormal blood glucose values occur.