Allergy food (Non-Vegetarian)

False positive occur in the following scenarios:
1.You have a small amount of IgE antibody to allergen but are not be truly allergic to that.You can contact the allergen and experience absolutely no reaction to it.
2.Some proteins in foods are cross-reactive with similar proteins in other foods or even environmental allergens like pollens.This cross reactivity can lead, for example, to a falsely positive test for soy in a person witrh peanut allergy, or a positive test to wheat in a person with grass pollen allergy.