Yes, on the celiac web site (http://www.celiac.com/gluten-free/) people ask this question all the time and there are quite a few people who had negative results. But there's a WHOLE lot who don't get a negative result. I think the talk I attended by Dr. Fine it was like 60% of the samples are positive. However, people who send them in have a reason for sending them in, they feel like they might have issues with gluten.

Read the FAQ on his web site. I think he suggests you try a dietary trial even if you have a negative. Some people don't produce IgA and get a false negative.