Test Details: Proteins derived from cockroach feces, saliva, eggs, and shed cuticles have been implicated as leading causes of allergic reactions, ranging from mild allergic rhinitis to severe such as eczema and asthma. This German Cockroach allergy test helps detect whether a person is allergic to this species of cockroach by detecting and measuring the level of specific Immunoglobulin E (IgE) antibody in the blood sample.