Epstein-Barr Virus (EBV) Nuclear Antigen Antibodies, IgG
Aid in the diagnosis of EBV infections (infectious mononucleosis). EBV nuclear antigen (EBNA) IgG antibodies do not appear during the acute phase of infection but appear around 2-4 months after initial clinical presentation and typically persist for life. The presence of EBNA IgG antibodies in healthy individuals typically indicates past immunological exposure to EBV.