Taking blood glucose at 10:00 a.m. may result in inaccurate results that differ from the true blood glucose value, but there is no uniform data on how large the error is. Measuring blood glucose at 10:00 a.m. may not be accurate enough. The reason is that if the subject still has not eaten before 10:00 a.m., it may lead to hypoglycemia, and the body compensates for the hypoglycemia by reactive blood glucose elevation, and the blood glucose value measured at this time does not represent the true fasting blood glucose level. If you want to measure fasting blood glucose, you need to do it after 8~10 hours of fasting, and it is best to test your blood glucose at 6~8 o’clock in the morning, when the measured blood glucose value is generally more accurate. If fasting blood glucose is found to be higher than normal, it is recommended to consult a doctor in time and make positive lifestyle adjustments to control the blood glucose level under the doctor’s guidance.