Measuring blood glucose after eating, generally referred to as postprandial blood glucose, is usually measured 2 hours after a meal.
The 2-hour postprandial blood glucose is one of the clinical indicators for determining the level of blood glucose, which can be clinically used for daily blood glucose testing and diagnosis of diabetes mellitus.
The 2-hour postprandial blood glucose is usually measured using a blood glucose meter after the first bite of food, when the timing starts, and 2 hours later, after the collection of finger blood. The value measured by this method is easily affected by a variety of factors such as the amount of food eaten, the time spent on eating, and the type of food eaten, and can only reflect the blood glucose level at that time.
The glucose tolerance test is more standardized than the 2-hour postprandial glucose test. Glucose tolerance test requires subjects to fast for 8 hours, then take 75g of anhydrous glucose by mouth quickly (required to drink within 5 minutes), and after 0.5 hours, 1 hour, 2 hours, 3 hours, take venous blood and measure venous blood glucose, which can determine whether they are suffering from diabetes or not.
The 2-hour postprandial blood glucose monitoring is a simplified method, if you need to accurately determine the presence of blood glucose abnormality, you can promptly consult a doctor, improve the glucose tolerance test, and make a clear diagnosis.