Yay for the normal biopsy! Thanks for the follow up. Were you eating gluten prior to the endoscopy?

I think that with the elevated antibodies found in past tests, and a negative biopsy, you are firmly in the NCGS camp. If symptoms go away on a gluten-free diet it would be confirmation that you should likely stay on the diet.

Just to follow up on this, a year later I had endoscopy, the result was mild chronic gastritis, the initial endoscopy looked normal and the biopsy was normal.  

Please explain more about the tests you took. What type of blood test was it? Which company offered the test? Also, there is no hair test for celiac disease--what was that test? Also, for your GP to test you for celiac disease you must keep eating gluten daily, and lots of it. Here is more info about how to do a gluten challenge for a celiac disease blood panel, or for an endoscopy: and this recent study recommends 4-6 slices of wheat bread per day:    

@Kjmanchester, going on a gluten free diet before the GP has had a chance to run the blood tests for celiac disease will likely invalidate the results of the tests. Hair sample tests for gluten disorders are not recognized as reliable diagnostic methods. Can you supply a link to the "pin prick" test you got from Amazon? The fact that your symptoms have improved since removing gluten from your diet indicates that you either have celiac disease or NCGS (Non Celiac Gluten Sensitivity). They share many of the same symptoms but NCGS does not damage the lining of the small bowel as does celiac disease. There is no test for NCGS. Celiac disease must first be ruled out. But since you have already started the gluten-free diet, as I already explained, your testing for celiac disease will likely not be accurate. For it to be accurate you would need to restart gluten and be eating generous amounts of it for several weeks before the test blood draw.