Chicken breeders and staff within the chicken food processing trade are examples of groups with high risk of exposure to developing chicken feather allergies. Chicken feathers is also encountered unexpectedly in pillows manufactured from chicken feathers, arts and crafts that include chicken feathers, and wing feathers used in fletching arrows. Allergy Chicken Feather test is performed on a sample of blood to measure the amount of Immunoglobulin E (IgE) Antibodies within the blood. It is performed to verify Chicken Feather allergic reaction and also during the treatment and once the treatment of Chicken Feather allergy is done. It's also called allergy Chicken Feather Enzyme Assay.