Hope, several blood and one stool test (very expensive but imo worth my health). Intestinal permeability test checks zomulin which regulates the tight junctions in the intestine that allows or prevents molecules from passing into the blood stream. A wheat zoomer test, 180 food blood test checking IGG for food sensitivities, and several other revealing tests. To learn more about these tests see a functional Dr (which specialize in a hybrid between eastern and western medicines).