

I'd say with the GTT, just make sure to eat some extra carbs in the days before the test (not loads, just a couple extra servings a day of good, whole grain carbs). Take the test in the morning when your blood sugar is likely at it's lowest anyway. Fast before the test, or if you don't at least have a high protein breakfast without lots of carbs. After you drink the glucola, WALK. Walk until you have to get the blood drawn as exercise helps to regulate blood sugar.
I bet you'll do fine!! Good luck!!