Food Sensitivity Test (IgA + IgG)

A 96-food immunoglobulin panel measuring IgA and IgG antibody responses to common foods, spices, and additives. May help identify foods associated with delayed digestive discomfort, inflammation, skin reactions, and energy fluctuations. At $379, the panel covers a broad range including gluten, dairy, eggs, nuts, soy, nightshades, and common food additives, with results reviewed by the clinical team.

The Food Sensitivity Test at Next Health West Hollywood measures IgA and IgG antibody reactivity to 96 foods, spices, and food additives using a blood sample obtained from a standard venepuncture draw. This test belongs to the category of delayed-type food hypersensitivity assessment — distinct from true IgE-mediated food allergy testing (which evaluates immediate reactions) and instead measuring the immunoglobulin subtypes associated with delayed, non-anaphylactic immune responses to food antigens that can occur hours to days after consumption. IgA antibodies, produced primarily in mucosal tissue, reflect the gut's local immune response to food proteins that cross the intestinal barrier. Elevated IgA to a specific food may suggest intestinal permeability or mucosal immune activation. IgG antibodies reflect systemic immune memory; elevated IgG reactivity to certain foods has been associated in functional medicine practice with low-grade inflammation, bloating, skin conditions such as eczema, brain fog, fatigue, and joint discomfort, though the clinical significance of isolated IgG elevation remains a subject of debate in conventional immunology literature. The 96-food panel covers grains and gluten-containing foods (wheat, rye, barley, oats, spelt), dairy products (cow's milk, casein, whey, cheese types), eggs, tree nuts (almonds, cashews, walnuts, hazelnuts), legumes (soy, peanuts, lentils), nightshades (tomatoes, peppers, eggplant), seafood, common fruits, root vegetables, and a selection of food additives and colourings. Results are presented as a tiered reactivity map (low / moderate / high) for each food tested, and the Next Health clinical team provides dietary elimination and rotation guidance based on the results. Blood draw takes 10–15 minutes.