<prompt> Paul Bunnel test is done for?HBVEBVCMVHIV  <response>: EBV REF: Textbook of Microbiology Immunology by Parija 2009 Page 504 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. 