Table of Contents
What does positive IgG EBV mean?
The presence of VCA IgG antibodies indicates that an EBV infection has occurred at some time recently or in the past. The presence of VCA IgM antibodies and the absence of antibodies to EBNA mean that the infection has occurred recently. The presence of antibodies to EBNA means that the infection occurred in the past.
What color tube is used for EBV?
Collection. Collect specimen in lavender-top (EDTA) tube. Centrifuge specimen within 24 hours of collection.
How do you read EBV IgG?
If someone has positive VCA-IgG and EA-D IgG tests, then it is highly likely that the person has a current or recent EBV infection. If the VCA-IgM is negative but VCA-IgG and an EBNA antibody are positive, then it is likely that the person tested had a previous EBV infection.
How do you read mono test results?
The results of a mono test are either positive or negative. A positive test indicates the presence of heterophile antibodies. This result, alongside a patient’s symptoms, are used to make a diagnosis of infectious mononucleosis. A negative test may indicate that a patient does not have infectious mononucleosis.
What is an EBV antibody profile?
Presence of VCA IgM antibodies indicates recent primary infection with Epstein-Barr virus (EBV). The presence of VCA IgG antibodies indicates infection sometime in the past. Antibodies to EBNA develop 6 to 8 weeks after primary infection and are detectable for life.
How is EBV diagnosed?
EBV infection can be confirmed with a blood test that detects antibodies. About nine out of ten of adults have antibodies that show that they have a current or past EBV infection. For more information, see Laboratory Testing.
What is the difference between EBV IgG and IgM?
Anti-VCA IgM appears early in EBV infection and usually disappears within four to six weeks. Anti-VCA IgG appears in the acute phase of EBV infection, peaks at two to four weeks after onset, declines slightly then persists for the rest of a person’s life.