Which is more important, fasting blood sugar or postprandial blood sugar?

Although diabetes is not as terrible as brain tumors, heart disease, or cancer, it can also cause patients to lose their lives. The disease will gradually reduce the patient's immune system, making it easy to be infected by some viruses. Therefore, everyone must do a good job of preventing the disease. The standard for diagnosing diabetes is fasting blood sugar and postprandial blood sugar. So which one is more important, fasting blood sugar or postprandial blood sugar?

First, which is more important, fasting blood sugar or postprandial blood sugar? Generally speaking, when we go to the physical examination center for a physical examination, we check our fasting blood sugar. If we want to screen for diabetes, we must check whether our postprandial blood sugar is normal. In fact, fasting blood sugar and blood sugar 2 hours after meal are commonly used monitoring indicators.

Second, fasting blood sugar refers to the blood sugar measured by blood draw before breakfast after fasting overnight, at least 8-10 hours without eating any food, except drinking water. The blood sugar measured by fasting blood test before lunch or dinner can only be called pre-meal blood sugar, not true fasting blood sugar. The 2-hour postprandial blood sugar level refers to the blood sugar level measured 2 hours after the first bite of food. Before the measurement, you should take medicines and injections as usual, and the quality of your meals should also be the same as usual.

Third, fasting blood sugar and postprandial blood sugar each have their own uses. The former can reflect whether the food intake and medication dosage the night before are appropriate, and the latter can help detect diabetes early and prevent diabetic complications. However, they each have their own shortcomings. For people with low urine glucose sensitivity, fasting blood glucose measurements may not be accurate, and measuring postprandial blood glucose may miss patients with impaired fasting blood glucose. After saying so much, you may have guessed that both fasting blood sugar and postprandial blood sugar are very important and should be monitored.

Which is more important, fasting blood sugar or postprandial blood sugar? For people with high blood sugar who have not yet reached diabetes, regardless of whether it is a contradiction or not, as long as one of them is abnormal, there is a problem. If the fasting blood sugar level is high (6.1-7.0mmol/L), but the blood sugar level is normal 2 hours after a meal, it means that the fasting blood sugar level is impaired. Fasting blood sugar is normal, but blood sugar 2 hours after a meal is high (7.8-11.1mmol/L), which means that postprandial blood sugar is elevated or glucose tolerance is impaired.