EBV Activity EA Test - EBV Early Antigen (EA) IgG Test

The Epstein-Barr virus (EBV) early antigen IgG antibody test is an immunoassay that measures the level of antibodies directed against the virus's early antigens (EA). These antibodies appear during the active phase of acute infection and usually disappear within 3–6 months. Their presence after this period or their reappearance may indicate reactivation of the latent virus.