Shop online for food allergy tests to help identify diet-related sensitivities and intolerances affecting your immune system. These food allergy panels measure the levels of IgE (immunoglobin E) antibodies your body produces when exposed to various foods like nuts, dairy, seafood, wheat, and more. Once you purchase a test, it's easy to schedule an appointment at one of 2000+ Quest Diagnostics locations nationwide. You'll get fast results online and have the option to discuss them with an independent physician at no extra cost.