Tolerance test mainly refers to glucose tolerance test, need to take venous blood under fasting state for testing, the specific operation is as follows.
Before doing the glucose tolerance test, fasting is required, and it is generally recommended to fast for 8~12 hours before the test, then consult the endocrinology department to draw venous blood for the test, 75g of glucose powder is required to be dissolved in 300ml of lukewarm water, and it is required to be finished within 5 minutes, and then the 2nd venous blood test is conducted after 60 minutes of observation.
The third glucose tolerance test is usually required to be conducted 120 minutes after taking the first sip of sugar water, from which the glucose tolerance situation can be understood and abnormal glucose tolerance can be ruled out.
If the glucose tolerance is above the normal range in all three tests, blood glucose monitoring is needed to see if the blood glucose is high and to rule out diabetes, which should be done according to the doctor’s instructions.