This test is also called as the Allergy Biomarker Fluorescence Assay Blood. It helps to determine the level of IgE antibodies in the blood. This is usually performed to confirm Biomarker Allergy. It is also done during and after the treatment of Biomarker Allergy to understand if the therapy is effective and the person has outgrown the allergy. This is usually done to help diagnose an allergy a person may have, to some specific substance, called allergens, based on the symptoms seen. The idea is to find out what the allergy trigger is, whether it is some food substance, environmental, or genetic.