EBV Early Antigen Blood Test
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Test Code: 096248
Specimen Type: Blood
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Description:
EBV Early Antigen Blood Test
The EBV Early Antigen (EA) Antibodies IgG test looks for a type of antibody which the body typically develops in response to Epstein-Barr Virus. These antibodies usually develop in the acute phase of infection and fall below detectable levels after 3-6 months. In many people, a detectable EA antibody level indicates an active infection in which the virus is actively replicating. This is usually the case during an initial infection but EA antibodies may be detectable in the case of a latent infection which has reactivated. However, in about 20% of people the EA antibodies will remain detectable for years even if the virus is not active.
Epstein-Barr Virus is one of the most common viruses with as many as 95% of the people in the US having been exposed by the age of 40. In many people the virus causes no symptoms. Those infected during adolescence or young adulthood may develop Infectious Mononucleosis (Mono). Common symptoms of Mono include fatigue, fever, sore throat, swollen lymph glands, and sometimes an enlarged spleen or liver. Additional complications affecting the heart or nervous system may occur but are rare. Symptoms of Mono typically clear up after a couple months but EBV will remain dormant in the body for the rest of a person's life. Periodic reactivation of the virus may occur but usually does not cause symptoms or illness. EBV is normally spread through contact with an infected person's saliva. Some people remain capable of transmitting the virus throughout their lives.
This test is usually ordered when someone has inconclusive results from EBV Viral Capsid Antigen (VCA) IgM and IgG tests, especially if they are experiencing symptoms associated with Mono. This test is not typically ordered by itself as an initial screening because it is difficult for a doctor to make a diagnosis based just on the results of this test. The results of an EBV Nuclear Antigen Antibodies test can aid in a diagnosis when ordered at the same time as an Early Antigen test.
Turnaround time for the EBV Early Antigen Abs, IgG test is typically 2-3 business days.
Where can I find a EBV Early Antigen Test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Detection Period:
Early Antigen IgG antibodies are typically detectable around 4 weeks after infection and fade out after 3-6 months. In some people, these antibodies may be detectable for years even if they are healthy.
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