<prompt> Paul Bunnel test is done forHBVEBVCMVHIV  <response>: B EBV Heterophil antibodies, which is an antibody against EBV cross reacts with red blood cells of different animal species. This can be used as a rapid screening test for mononucleosis Monospot test and Paul Bunnell tests The Paul-Bunnell test uses sheep erythrocytes; the Monospot test, horse red cells, blood cells. In infectious mononucleosis, IgM heterophil antibodies are usually detectable for the first 3 months of infection. 