It is a specialised screening test that helps assess respiratory allergies and sensitivities. The test allows the identification of allergens that may be triggering respiratory symptoms such as sneezing, nasal congestion, coughing, wheezing, and shortness of breath. Some common respiratory allergens include pollen, mold spores, dust mites, pet dander, and certain air pollutants. The test is done using Immunoblot (Line immunoblot assay – LIA) from Germany’s Euroimmun.