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Reference Guide
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Anti-EBNA IgG
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Anti-EBNA IgG
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EBV Nuclear Antigen Antibody IgG

What's 
Anti-EBNA IgG
?
Anti-EBNA IgG, or Epstein-Barr Virus Nuclear Antigen Antibody IgG, is a special kind of defense protein that your body makes when it has been infected with the Epstein-Barr virus (EBV). This virus is often responsible for causing infectious mononucleosis, also known as "mono." When Anti-EBNA IgG is found in your blood, it means that your body has come across EBV at some point in the past. Think of it as a historical sign, showing that your body has successfully fought off this specific virus before. This defense protein stays in your system for a long time, helping to protect you from getting infected with EBV again in the future.
If Your Levels Are High
Elevated levels of Anti-EBNA IgG might mean that your body is actively fighting the Epstein-Barr virus (EBV), possibly due to a new infection or reawakening of an old one. Sometimes, stress, tiredness, or certain medications like steroids or immunosuppressants can cause the virus to become active again. It's also possible that your immune system is making more of these antibodies in response to another health issue, like an autoimmune condition, where the body mistakenly attacks its own tissues. So, high levels of Anti-EBNA IgG could be a sign of an EBV infection, reactivation, or an unrelated health problem.
Symptoms of High Levels
Symptoms of high levels of Anti-EBNA IgG could include fatigue, fever, sore throat, swollen lymph nodes, and a general feeling of being unwell. However, it's also possible to have elevated levels of this antibody without experiencing any noticeable symptoms.
If Your Levels are Low
Low levels of Anti-EBNA IgG might mean that your body hasn't come across the Epstein-Barr virus (EBV) before, or it could be that your immune system didn't create enough of these defense proteins to be easily detected. This could happen if your immune system is weaker than usual, maybe due to certain medications like steroids or chemotherapy drugs, or if you have a health condition that affects your immune system. It's also possible that you've been recently infected with EBV, and your body just hasn't had enough time to make these long-lasting antibodies yet.
Symptoms of Low Levels
Symptoms of low levels of Anti-EBNA IgG are typically non-existent, as this test is more of an indicator of past exposure to the Epstein-Barr virus rather than a measure of current health or disease status.

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EBV Nuclear Antigen Antibody IgG

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