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Epstein-Barr Virus Viral Capsid Antigen IgG


If the body is infected with bacteria, viruses or any other harmful microorganisms, the immune system produces antibodies to fight the infection. IgG antibodies are produced in a delayed response to an infection and can be retained in the body for a long time.

The Epstein-Barr Virus (EBV) is a member of the herpes virus family that causes glandular fever. Once infected, EBV remains in the body for the rest of the individual’s life, but the virus often presents no symptoms unless the immune system is compromised which allows the virus to reactivate. VCA IgG antibodies target the viral capsid antigen found on the virus.

What might a low result mean?

A negative VCA (IgG) result indicates that you have not been previously exposed to EBV.

What might a high result mean?

A positive VCA (IgG) result indicates you have had a previous EBV infection.