Food allergen testing is the process of determining whether a person has an allergy to a particular food. This can be done through skin prick testing, blood testing, or both. Skin prick testing involves placing a small amount of the suspected allergen on the person’s skin and then pricking the skin to allow the allergen to enter. If the person is allergic, they will typically experience a raised, itchy bump at the site of the prick. Blood testing, on the other hand, involves taking a blood sample and sending it to a laboratory for analysis. The laboratory will then look for the presence of antibodies that are specific to the allergen in question. If the person has these antibodies, it is likely that they are allergic to the food in question.