The allergy screen helps to screen the allergic disease. It is sometimes used to screen parasitic infections as well. The allergy screen includes Total IgE and Phadiatop test. This screening is suggested when one has symptoms such as itching, nausea, vomiting, diarrhea, itchy eyes, sneezing, eczema, coughing, etc. The allergy screen is done: • In case of allergies • In cases of signs and symptoms that suggest allergies • In case of a parasitic infection