Hi. It's good to see this diabetes classification added. I guess I'm one of quite a few classed by my GP as T2 (well, you're not a T1 are you?) to quote the GP. I've never been overweight, I lost a lot of weight shortly before diagnosis and tablets have not managed me well. I had my own GAD and c-peptide tests done recently as my GP wasn't interested. The former was negative and the c-peptide showed I had little of my own insulin (what a surprise). The interesting thing is the negative GAD. Now there are several other antibodies which most labs can't/don't test for and of course many other causes of pancreatic destruction such as viruses. I suspect in my case it may have been a virus. What concerns me is that of the 20% so-called T2s that are not overweight there must be quite a high proportion who are not insulin resistant and who in fact have a defective pancreas thru one of these unknown causes. Until the medical profession recognises that this very crude T1/T2 classification is hiding a mid-group of diabetics who have a range of more unusual causes we won't get nearer to the right research to separate out the causes. At least T1.5/LADA is becoming more clearly recognised thru positive GAD tests and some IA2; we just need more data and research where there aren't the right tests available. Anyone any views on the subject or more knowledge to bring to bear?