2029. Epstein-Barr virus (nuclear antigen, EBNA), IgG antibodies
Description
IgG antibodies to the Epstein-Barr virus nuclear antigen (EBNA) appear several weeks after infection and persist for life. Their presence indicates a past infection and developed immunity to EBV.
When and who needs the test?
- To assess immune status with respect to EBV (previous infection or not).
- To diagnose or confirm the phase of infection, in combination with other serological markers.
- In pregnant women – if primary infection is suspected (the absence of EBNA-IgG in the presence of IgM may indicate recent infection).
- In patients with suspected EBV reactivation, chronic forms, lymphadenopathy, and fever of unknown origin.
- In immunocompromised patients, before transplantation, or during chemotherapy – to assess the risk of complications.
Biological material
- Venous blood
Preparing for a blood test
In order to exclude factors that may affect the test results, we recommend to follow the preparation rules:
- an important condition for laboratory tests is to take blood on an empty stomach.
- 6-12 hours before the test, you should avoid eating, drinking alcohol, smoking, and limit physical activity. Drinking...
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