What is the normal blood sugar? Be familiar! Under normal circumstances, the normal value of fasting blood glucose is 3.9-6. 1mmol/L, and the normal value should be less than 7.8mmol/L two hours after meals. My uncle doesn't pay much attention to health problems, usually doesn't pay attention to diet, and there is no special blood sugar measurement in daily life. He was diagnosed with diabetes in July this year, and regretted buying him a blood glucose meter that he had always praised. Moreover, the newly added secondary sampling technology is very intimate. To put it simply, it may be that in the process of blood sugar measurement, the blood is insufficient for the first time. At this time, blood can be added to the same test paper again within 30 seconds, which can avoid secondary needle insertion. Now, he not only insists on measuring blood sugar every day, but also conforms to people's popular science knowledge, and his body is relatively stable. He can recite the question about "what is the normal blood sugar value".