Hi Faye,  Sorry I didn't see your post sooner.  I suffered from ataxia as well.  None of my drs. thought it was dairy.  They were wrong.  Turns out lactose intolerance was the cause.  Pancreas just isn't making the enzymes like it used to.  I now drink lactose free milk for the calcium and eat lactose free yogurt by Green Valley, when I can find it.  My ataxia problems vanished.  Hope this helps.

This article might be helpful. It breaks down each type of test, and what a positive results means in terms of the probability that you might have celiac disease. One test that always needs to be done is the IgA Levels/Deficiency Test (often called "Total IGA") because some people are naturally IGA deficient, and if this is the case, then certain blood tests for celiac disease might be false-negative, and other types of tests need to be done to make an accurate diagnosis. The article includes the "Mayo Clinic Protocol," which is the best overall protocol for results to be ~98% accurate.    

Let us know how things turn out.

I give this advice to everyone who is considering quitting their job: always try to line up a new job before you quit. Why? Because it's easier to find a job when you have one--unemployment for a stretch of time can be hard to explain, especially if the period of unemployment is prolonged. Also, unless you're independently wealthy or have family support, people tend to get desperate and take any job when the money is running out, so you could end up in a worse job. Just my 2 cents...

So, you are not IGA deficient. But as Russ H suggested, it looks like you may be a seronegative celiac.