I just saw my answer in the link provided by jcc: http://jccglutenfree.googlepages.com/diagnostictesting

That said that some doctors will diagnose the celiac based on the other testing. I would presume that in the case above that David presented where the malabsorption is so severe that osteoporosis resulted, that if the person is gluten sensitive, celiac could be diagnosed. In fact, in my opinion it would take an idiot of a doctor to NOT diagnose it in that case.

But, I might not be understanding the situation, and welcome other opinions.