What does the Epstein-Barr Virus Antibodies - EBV Ab blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:
The Epstein-Barr Virus Antibodies (EBV Ab) test is used to detect the presence of antibodies against the Epstein-Barr virus in the blood. EBV is a common herpesvirus that causes infectious mononucleosis (mono) and is associated with certain cancers. The test helps diagnose current or past EBV infections and can differentiate between acute, recent, or past infections. It measures different types of antibodies: VCA-IgM, VCA-IgG, and EBNA-IgG. The presence and levels of these antibodies indicate the stage of infection and the body's immune response to the virus.
A negative or low EBV Ab result generally indicates that the person has not been infected with the Epstein-Barr virus. This could mean:
In some cases, a negative result may require retesting or additional diagnostic methods to confirm the absence of EBV infection, especially if clinical symptoms suggest otherwise.
A positive or high EBV Ab result indicates that the person has been infected with the Epstein-Barr virus. The interpretation depends on the specific antibodies detected:
A positive result doesn’t necessarily mean the person is currently ill, as EBV can remain dormant in the body. The combination and levels of different antibodies help determine the stage of infection and guide appropriate treatment or monitoring.