My genetic tasting for gluten was positive and I am trying to follow the true gluten free diet for 4 months now, I do have an autoimmune condition like you and am responding well to the gluten free diet although not entirely healthy. I did have a bad attack the beginning of the year and had to be on prednisone also, this drug is awful, about killed me.
My son also has ADHD and just like you I am trying to save money for his genetic tasting as well, chances are he is 50% gluten intolerant. He does respond well to a whole some diet of organic food, I avoid anything artificial, dinners are mostly meat and vegetables. My main concern for him going gluten free will be not eating bread. I am still experimenting with the gluten free breads and treats from Dr. Osborne's book.