Normal 2-hour postprandial blood glucose but high fasting blood glucose may be caused by impaired fasting blood glucose or diabetes mellitus, or may be caused by inappropriate glucose-lowering program.
1. Impaired fasting blood glucose or diabetes mellitus: in healthy people, fasting blood glucose is 3.9-6.1 mmol/L, 2 hours after meal blood glucose <7.8 mmol/L. If the patient is not diagnosed with diabetes mellitus, 2 hours after meal blood glucose is normal, and fasting blood glucose is between 6.1-7 mmol/L, consider having impaired fasting blood glucose.
Fasting blood glucose greater than 7 mmol / L should be combined with symptoms (drinking, urination, polyphagia, wasting) to determine whether diabetes, need to control diet, appropriate exercise, if necessary, under the guidance of a doctor to take hypoglycemic drugs treatment.
2. Inappropriate glucose-lowering program: If the patient has been clearly diagnosed as diabetes by the doctor and has applied the glucose-lowering program, it may be due to the inappropriate glucose-lowering program, which may cause the dawn phenomenon or the effect of Sumuje's etc., resulting in the patient's postprandial blood glucose after 2 hours is normal, but the fasting glucose is high, which needs to be adjusted to the glucose-lowering program under the guidance of the doctor.
It is recommended that patients with normal postprandial blood glucose but elevated fasting blood glucose go to a regular hospital in time.