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.
DIET FOR GLUCOSE TOLERANCE TEST Instructions: 1. Follow this diet for 3 full days before the test. This is important so test results will be reliable. 2. You will not gain a significant amount of weight after only three days of the diet. 3.