Human EBV VCA IgG ELISA kit is a method designed for measuring in-vitro quantitative levels of human IgG antibodies against Epstein–Barr virus viral-capsid antigen (EBV VCA IgG) in plasma or serum samples. This assay has a minimum analytical sensitivity limit of 1.29 U/ml.


Epstein–Barr virus viral-capsid antigen (EBV-VCA) is responsible for the viral capsid of the Epstein–Barr virus and the antigen itself is the target of anti-VCA antibodies. These anti-VCA antibodies play an important role in diagnosing infectious mononucleosis. The identification of high levels of anti-VCA IgM can be used to confirm acute infection, whereas high levels of anti-VCA IgG antibodies indicates prior infection. Anti-VCA IgM is found to appear during the early stages of EBV infection and is gone between 4-6 weeks, whereas anti-VCA IgG is only present during acute phase infection and it peaks at 2-4 weeks and persists throughout the lifetime.


The minimum detection sensitivity level of IgG antibodies to Epstein–Barr virus viral-capsid antigen (EBV-VCA-IgG) using current human EBV VCA IgG ELISA kit was 1.29 U/ml. The dynamic range for this assay is 1.0 – 200.0 U/ml.


  1. The use of semi-automated EBV IgG avidity determination for the diagnosis of infectious mononucleosis. J Med Virol. (1998) 54 (2): 145-53. Weissbrich B.
  2. Seroepidemiology of EBV and interpretation of the “isolated VCA IgG” pattern. J Med Virol. (2009) 81 (2): 325-31. De Paschale M., et al.
  3. Avidity of EBVVCA-specific IgG antibodies: distinction between recent primary infection, past infection and reactivation. J Virol Methods. (1995) 52 (1-2) :95-104. Gray J.J.
  4. Measurement of EBV-IgG anti-VCA avidity aids the early and reliable diagnosis of primary EBV infection. J Med Virol. (2003) 70 (4): 617-23. Robertson P., et al.
  5. Analysis of immune complexes in rheumatoid arthritis for Epstein-Barr virus antigens reveals cross-reactivity of viral capsid antigen and human IgG. J Immunol. (1987) 138 (2): 407-12. Inman R.D., et al.


  • Full Name: EBV VCA IgG ELISA Kit
  • Reactivity: Human
  • Sample Type: Serum, Plasma
  • Sensitivity: 1.29 U/ml



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