The patch test doesn't test for wheat allergies. This one would test for chemicals, fragrances and other common ingredients in many products. I was thinking that I would do the test for celiacs in addition, although it really doesn't matter because I don't eat wheat anymore anyway! Btw, a great side effect of being gf, I lowered my triglycerides from super dangerously high to below normal in 6 months! I had inherited high triglycerides (double that of a morbidly obese man - but I weigh 110 pounds) and could never get them down till now.