What must you do after fasting for the glucose tolerance test?

After fasting for a glucose tolerance test, the correct procedure is to drink an orange glucose drink. This drink contains a specific concentration of glucose that is used to assess how well your body processes sugar. The test is designed to evaluate insulin response and glucose metabolism.

Fasting before the test is crucial as it helps ensure that the initial glucose levels in the blood are not influenced by recent food intake, providing accurate baseline measurements. Once the fasting period is completed, the intake of the glucose drink is essential as it triggers the body's response and allows for the evaluation of glucose tolerance at set intervals after consumption.

The other options, such as consuming a snack or taking a walk, would invalidate the test by introducing different variables that could affect blood glucose levels, while simply waiting would not fulfill the requirements of the test protocol. The test is specifically timed around the consumption of the glucose drink to monitor the body's response.