We have a range of blood tests for you to choose from; we have Intolerance (IgG4) ELISA testing because we are investigating delayed symptoms that could be associated with food intolerances. You can find more about the IgG4 testing science on the About Us pages on our site. We also have IgE ELISA food and non-food allergy testing. IgE antibodies are involved in Type I allergies and can cause rapid type immune reactions, with symptoms occurring within a few minutes up to two hours after eating a specific food. You can find more about the IgE testing science on the About Us pages on our site. We also have a range of combinations for the ultimate intolerance and allergy testing