My dr. told me to eat a protein breakfast 2 hours before going in, then drink the drink, wait an hour and get your blood drawn. I didn't have to take any other tests. That's just how they do it at my office.

@adalynn1223, did you have to do the 3 hr testing? I was able to eat a small breakfast before going in. I hear you have to fast for the 3 hr one if you fail the first one

I think the not eating for 2 hours before hand got to me more than the drink. lol.