The ASI Color Mono II Test is a simple color-enhanced agglutination test for the qualitative and semiquantitative detection of heterophil antibodies in human serum or EDTA plasma associated with infectious mononucleosis (IM). No initial dilution of patient sample is required for this test. The presence of IM antibodies in serum or plasma at detectable levels will interact with the sensitized particles to produce a visible red agglutination with a blue background, which is a positive result.