The bleeding that occurs while you take the inactive pills isn't the same as a regular period. Nor is the bleeding necessary for health. This is good news if you take birth control pills and want more control over your menstrual cycle, either for personal or medical reasons.
To prepare for the glucose tolerance diagnostic test: 1  Eat a balanced diet that contains at least 150 grams (g) of carbohydrate per day for 3 days before the test. Fruits, breads, cereals, grains, rice, crackers, and starchy vegetables such as potatoes, beans, and corn are good sources of carbohydrate.
Sample Menu: Be sure to eat 150-200 grams of carbohydrate for 3 full days before the test. The. approximate grams of carbohydrate are in parentheses following each menu item. You may feel. free to substitute from the list on the following page. NOTE: THIS DIET, SAMPLE MENU AND SUBSTITION, IS ONLY FOR PREPARATION.