Since autistic people do well on a glutin free diet does the over abundance of glutin in their bodies cause more blood clots like dvt?

No: First, the benefits of a gluten free diet for autism have not been proven conclusively by research and controvery exists regarding diet and autism spectrum disorder. Additionally, blood clots are not more common in autism and there is no association between gluten and blood clots. I think overall, the glutin free deal will pass. A gluten free diet is necessary in the case of celiac disease.