History of infection: An elevated VCA IgG shows a history of EBV infection but in isolation doesn't say if it's currently active- the other tests help show that, along with another called EA.They're usually ordered together.Almost all people in mid-20's or older have a positive IgG. The other tests are needed to see if it is chronic/reactivated. See https://labtestsonline.org/tests/epstein-barr-virus-ebv-antibody-tests
Answered 7/28/2019
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