Glucose tolerance generally refers to the oral glucose tolerance test, if the next day to do the oral glucose tolerance test the night before thirst can generally drink a small amount of plain water.
Oral glucose tolerance test is a kind of glucose load test, which can be used to diagnose suspected diabetes mellitus with insignificant elevation of blood glucose or atypical symptoms. It requires the patient to keep fasting for 8~10 hours before the test, during which the patient can drink a small amount of water if he/she is thirsty, but it is not advisable to drink a large amount of water, or else the accuracy of the test result will be affected.
In addition, three days before the test, you need to ensure that the daily intake of carbohydrates is greater than 150g.
If there is any abnormality in the glucose tolerance test result, it is recommended to go to the hospital for consultation.