Tom in ID

OK, here is one for everybody. I am 18 now and was diagnosed with Celiac at 5 years old. I have been strictly off gluten since. My blood tests always come back as not showing any gluten, which makes sense as I don't consume it. About 2 years ago I got "glutened" by a hotdog bun that I was told was gluten free, and I didn't have any immediate side effects...