Littlelin is right, and as they often only do the 1 test, it often does not show anything up anyway, you would need the full panel IgA, IgE, IgG, IgM, there is always the possibility that they would do a biopsy of your intestines. Ask yourself, is it worth it? If you have full blown celiac disease then maybe, but if you are non-celiac wheat sensitive, then just go without wheat. You can always do the odd gluten free loaf, slice it, freeze it, and just use the odd slice when you really feel the overwhelming need for some toast. If you are feeling better wheat free, just stick with it, its not worth making yourself feel awful again. The bottom line is its ultimately down to you to look after your own health, and that sometimes means following your nose, or hunch, if you feel something is not right.