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Epstein-Barr Virus Nuclear Antigen (EBNA) Antibody Blood Test, IgG

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An EBNA Antibody Blood Test, IgG is useful in diagnosing past Epstein-Barr virus (EBV) exposure.  


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Test Code:


CPT Code(s):


Also Known As:

EBV Nuclear Antibody


Immunoassay (IA)




No special preparation required.

Test Results:

2-3 Days. May take longer based on weather, holiday or lab delays.

Walk-In Lab is prohibited from selling Quest tests to residents in the following states:AZ, NY, NJ, RI

Epstein-Barr virus (EBV) antibodies blood tests are used to help diagnose EBV infection, the most common cause of infectious mononucleosis (mono) if a person is symptomatic but has a negative mono test.  These tests may be ordered for an asymptomatic person to see if that person has been previously exposed to EBV or is susceptible to a primary EBV infection.

Symptoms include:

Extreme weakness or fatigue
Sore throat
Swollen lymph glands in the neck and/or armpits
Enlarged spleen and/or liver (sometimes)

The EBNA antibody does not usually appear until after the acute infection has resolved. EBNA can be seen approximately 2-4 months after the beginning of symptoms and will continue throughout someone's life.  

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