An IgE test, or immunoglobulin E test, is a blood test that measures the levels of IgE antibodies in the blood. IgE is a type of antibody produced by the immune system in response to allergens. High levels of IgE may indicate the presence of an allergy or a parasitic infection
. There are two general types of IgE tests: the total IgE test, which measures the overall amount of IgE in the blood, and the specific IgE test, which measures the amount of IgE produced in response to a particular allergen
. These tests are used to help identify allergies to various substances such as foods, pets, pollen, mold, and others
