Epstein-Barr Virus (EBV) Nuclear Antigen Antibodies, IgG Labcorp test 010272

This test measures specific antibodies, which are immune system proteins, that develop months after exposure to the Epstein-Barr virus (EBV). Because these antibodies typically appear long after an initial infection and stay in the body for life, this test helps show whether you have had a past infection like mononucleosis (mono).