Heterophile, Mono Screen:
Fasting Required: No
Specimen: Serum
Lab: Quest Diagnostics
Results: Test run Mon-Fri; Average processing time 3-5 days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Description: Heterophile antibodies, in patients with infectious mononucleosis, may be present as early as the fourth day of illness, and by the twenty-first day of illness, 90% of patients will exhibit a positive test. The Epstein-Barr virus causes infectious mononucleosis.