Ginger is a household spice. Though the allergy to ginger is fairly uncommon it still is known to cause allergic reactions to few people. The reactions generally manifest themselves within a few moments of eating ginger based products. The reactions like rhinitis, dermatitis, hives or more the more serious anaphylactic kinds can occur. Allergies that generally manifest within 2 hours after exposure to the allergen are caused because of IgE antibodies. These protein molecules are secreted in the body because the body regards the allergen as foreign and sends antibodies to fight them. The Blood test the presence of IgE Antibodies in the blood or plasma of an individual. This method of testing is effective than skin prick test for testing allergies.