Dust allergy is a common problem among individuals. An extreme factor in airway inflammation and asthma is the allergen in house dust. House dust contains a collection of harmful substances from plants and animals that create IgE antibodies in the blood. A number of microorganisms also contribute to the allergic reactions. The allergy test for house dust is performed to identify the presence and extent of these antibodies in the blood. Symptoms related to problems in breathing and other respiratory issues indicate the need for this test. It is performed as a routine blood test.