I also understand your frustration. I was diagnosed at 35 when I was having trouble in college, and was put on medication. Since then, every time I went into a new program, they wanted me to be retested, as though maybe it miraculously went away. The 3rd time, the psychologist decided I didn't have it after all, I just suffered from anxiety! But anyway, what I was going to say was, the 2nd time I was tested, it was at a testing center at a college, and the people doing the testing were graduate students working under a doctor. They tend to be more thorough, since they get graded for it. It might be something you could look into.