Additional Information

Use:  When equivocal results are obtained, another specimen
should be obtained 10 to 14 days later and tested in parallel with
the initial specimen.  If the second specimen is also
equivocal, the patient is negative for primary or recent infection
and equivocal for antibody status. 

If the second sample is positive, the patient can be considered
to have a primary infection.  The conversion of an individual
patient’s serum from negative to positive for antibodies to
the infectious agent in question is defined as seroconversion and
indicates active or recent infection.