Celiac researchers hate that, for whatever reason, people decide to go gluten free before testing. Because, currently there is no way to test for Celiac in a gluten free person. Good Doctor's aren't supposed to "guess" and give you a diagnosis. They are working on a couple of different tests for Celiac that involve a smaller gluten challenge (3 days) or no gluten challenge. They do not just decide to hurt you for fun or profit as some seem to be implying here.
I heard some of them say that Celiac is about the only serious disease that people & alternative health practitioners think its OK to self-diagnose. They used the example of Type 1 diabetes - you wouldn't just start giving yourself insulin without a diagnosis.
I understand that a gluten challenge may not be right for you, but don't bash the doctors who only have that means to get a definitive diagnosis of Celiac. You chose to self-diagnose, for whatever reason, and that will have to be the diagnosis you live with for now. Perhaps, in a few years, the new testing methods will be viable and you can decide if that is right for you.