The hospital will usually provide the appropriate dose of glucose for the test, so you do not need to bring it with you, and it is recommended that you consult your doctor for details. The test taker should fast for 8-10 hours the night before, and in the morning of the next day, 75 grams of glucose should be added to 250-300 ml of water and drunk within 5 minutes to measure the fasting blood glucose and the blood glucose after 0.5 hours, 1 hour, 2 hours, and 3 hours, respectively. The hospital will usually provide the glucose needed for the test, so there is no need to bring your own sugar. During the test, care should be taken to avoid mental stimulation, no smoking, coffee, tea or food throughout the test, and no strenuous exercise. Glucose tolerance test should be conducted under the guidance of a doctor, and specific precautions can be consulted with the doctor.