Postprandial 2-hour blood glucose, i.e. the blood glucose value tested 2 hours after eating, is a common clinical method to screen and detect diabetic patients with normal fasting blood glucose. The 2-hour postprandial blood glucose of normal people is usually below 7.8 mmol/L.
Under normal circumstances, after eating, due to food stimulation, human insulin will suddenly secrete a large amount to bring down the elevated blood sugar, thus maintaining the blood sugar at normal level. When the blood glucose 2 hours after meal is higher than 7.8mmol/L and lower than 11.1mmol/L, it is called impaired glucose tolerance, which requires a comprehensive assessment and a standard 75g glucose tolerance test if necessary. When the postprandial glucose value into more than 11.1mmol/L, if there are already diabetes-related symptoms, such as polyuria, polydipsia, polyphagia and lethargy, the diagnosis of diabetes can be confirmed. If not, the diagnosis should be confirmed in conjunction with observation of fasting blood glucose or rechecking. Some evidence-based medical evidence shows that 2-hour postprandial blood glucose has a relevant effect on the occurrence of cardiovascular complications, so postprandial blood glucose is also very important as fasting blood glucose.
Therefore, the normal value of 2-hour postprandial blood glucose is ?7.8 mmol/L. If elevated postprandial blood glucose is found, it is necessary to draw attention and go to the hospital for examination in time to avoid delaying the disease.