Test code links throughout this Guide refer to the corresponding test in the User's Guide. A single heterophile antibody titer is considered to have no relation to the severity of the disease, but sequential titer determinations may be useful in following the course of an individual patient.
Negative results are more common in children.
If further testing is desired, collect additional specimens and retest every few days. Epstein-Barr Virus . Davidsohn I. Serologic diagnosis of infectious mononucleosis. Lee CL, et al. Horse agglutinins in infectious mononucleosis.