Skip to content

Our Covid-19 Antibody Blood Test is available. Shop now

EBNA IgG Antibodies


The Epstein-Barr Virus (EBV) is a member of the herpes virus family that causes glandular fever, spread through saliva. Once infected, EBV remains in the body for the rest of the individuals life, but the virus often presents no symptoms unless the immune system is compromised which allows the virus to reactivate. EBNA, or Epstein-Barr nuclear antigens are proteins produced and expressed by EBV. The body produces EBNA IgG antibodies when infected by EBV.

What might a low result mean?

A negative EBNA IgG antibody result indicates that you have not been previously exposed to EBV.

What might a high result mean?

A positive EBNA IgG antibody result indicates you have had a previous EBV infection. EBNA IgG antibodies develop 6 to 8 weeks after the time of infection and are present for life.