I've heard about many cases of this. I think this sort of error is unfortunate, and completely preventable. When I was in Highschool, a friend was diagnosed and treated by her family Dr. as T2. She had many episodes of severe highs and lows. Treated only with oral medication. The thinking was that she had to be T2, because 15 was considered too old to develop T1. This was also about 17 years ago. Do they run antibody tests when you're diagnosed, now?