Use

The test is useful for establishing a diagnosis of an allergy to duck feathers and defining the allergen responsible for eliciting signs and symptoms. It is also used for identifying allergens responsible for allergic responses or anaphylactic episodes, confirming sensitization before beginning immunotherapy, and investigating the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. IgE antibody testing is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or when medical management does not depend on allergen specificity.