I regularly have people coming in to clinic with what I suspect to be food intolerances. When I suggest testing, quite a few will say they have already had a skin prick allergy test, and they weren’t allergic to any of the foods I believe to be causing the problem (usually wheat and dairy, my old nemesis’s). This is where they are often mistaken. They may have been IgE allergy tested for what and dairy, and no, they have no true allergy to either of these foods, but it does not mean they are not intolerant! Please remember, the allergy test done by your doctor is an IgE test- it has nothing to do with IgG. And it is IgG intolerances that are rapidly becoming common place.