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Blood tests. 1  Antibody tests. If there's a need for additional confirmation, a monospot test may be done to check your blood for antibodies to the Epstein-Barr virus. 2  White blood cell count. Your doctor may use other blood tests to look for an elevated number of white blood cells (lymphocytes) or abnormal-looking lymphocytes.
In adolescents and adults, it causes an illness known as infectious mononucleosis between 35 and 50 percent of the time. The virus is spread through saliva or upper respiratory secretions and cannot be spread through contact with the blood. The Epstein-Barr virus test is a blood test used to identify an EBV infection.The test detects the presence of antibodies, which are proteins that your bodyâs immune system releases in response to a harmful substance, called an antigen. Specifically, the EBV test is used to detect antibodies to EBV antigens.he Epstein-Barr virus test is a blood test used to identify an EBV infection.