Mononucleosis Tests – Health Information Library | PeaceHealth

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Results

Epstein-Barr antibody testing

The results of an EBV antibody test are usually ready within 3 days.

The results of the antibody test to detect Epstein-Barr virus (EBV) are usually reported as positive (antibodies are present) or negative (antibodies are not present).

The EBV antibody test can also detect the type of antibodies (immunoglobulins) present in the blood. The type of antibody shows whether the infection is recent or occurred in the past.

Normal (negative):

  • No IgM antibody against EBV is present.

Abnormal (positive):

  • The antibody IgM against EBV is present.

Rapid mono test

A rapid mono test may be done in some health care settings, but it's possible for the results to be negative (false negative) in the early days of the infection. The results of a rapid mono test are usually ready within 1 hour.

Normal (negative):

  • The blood sample does not form clumps (no heterophile antibodies are detected).

Abnormal (positive):

  • The blood sample clumps (heterophile antibodies are detected). If the blood sample clumps, you probably have mono.

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