IgG antibodies to nuclear antigen of Epstein-Barr virus (EBNA IgG, Serum)
The study is aimed at detection of IgG antibodies to the EBV nuclear antigen (EBNA). Used to confirm past EBV infection and formation of stable immune response. Not detectable in the acute phase of infection; appears 2-3 months after primary infection. Applied for differential diagnosis of EBV infection stages and immune status assessment.
What the test evaluates:
- Presence of IgG antibodies to EBNA in blood serum
- Stable immune response to the virus indicating past infection
- Efficacy and duration of immunity
Biomaterial: Venous blood (serum)
- Draw blood fasting (8-12 hours after last meal)
- Still water is permitted
Medications:
Immunoglobulins and immunomodulators may affect results
All medications should be coordinated with physician and indicated at time of testing
Recommended for:
- Clarifying EBV infection stage
- Immune status assessment or immunodeficiency conditions
- Prolonged asthenia, non-specific symptoms, or general condition disorders after infection
Positive result (EBNA IgG detected): indicates past EBV infection; immunity formed, acute phase absent
Negative result (EBNA IgG not detected): EBV not previously contracted or immune response not yet formed; in acute infection VCA IgM and VCA IgG may be positive while EBNA IgG not yet detectable
Note: For accurate EBV infection stage assessment, comprehensive testing is recommended: VCA IgM, VCA IgG, EA IgM, EA IgG, EBNA IgG.
