Glucose tolerance refers to oral glucose tolerance test, normal people glucose tolerance two hours is not higher than 7.8mmol / L, is the normal range, pregnant women two hours glucose tolerance level is less than 8.5mmol / L. Normal people who have fasting blood glucose less than 7.0mmol/L, but glucose tolerance test two-hour blood glucose is greater than or equal to 7.8mmol/L and less than 11.1mmol/L, suggesting impaired glucose tolerance. Pregnant women as a special group, the requirements for blood glucose control is more stringent, in the 24-28 weeks of pregnancy, oral 75 grams of glucose tolerance test, when the fasting blood glucose reaches or exceeds 5.1 mmol / L or oral glucose 1 hour blood glucose value reaches or exceeds 10.0 mmol / L or oral glucose 2 hours blood glucose value reaches or exceeds 8.5 mmol / L can be diagnosed as diabetes mellitus. Glucose tolerance is a test of glucose tolerance. Glucose tolerance is the full name of the glucose tolerance test, which is clinically used for the diagnosis of diabetes mellitus and other patients. If diabetes has been diagnosed, glucose tolerance test can provide a comprehensive understanding of the patient’s peak glucose secretion, insulin secretion function, C-peptide, etc., thus providing a laboratory basis for the scientific selection of solutions. If the glucose tolerance index is abnormal, please consult the endocrinologist in time.