Epstein-Barr Virus Viral Capsid Antigen (VCA), IgG

Class IgG antibodies to the capsid protein of the infectious mononucleosis virus (Epstein-Barr Virus, EBV) are specific antiviral immunoglobulin proteins produced by the immune system in response to Epstein-Barr virus infection and indicate the presence of a current or past infection. The test is used to confirm the diagnosis of current or past infectious mononucleosis; for differential diagnosis in diseases with similar symptoms (cytomegalovirus infection, HIV infection, etc.). In the acute stage of infection, IgM to the viral capsid antigen (VCA) are the first to be detected in the blood, reaching maximum concentration in blood plasma in the 3rd week of the disease and disappearing by the 4th-6th week of the disease. Later, IgG to the viral capsid antigen (VCA) appear, reaching a maximum in the 2nd-4th week of the disease, then decreasing slightly and persisting throughout life. Upon reactivation of the infection, the titers of these antibodies usually rise.

Within 2 days. The specified time does not include the day of biomaterial collection