Microbiology Heterophile agglutination test is? A Heterophile antibody that reacts with the microorganism or cells of unrelated species due to common antigen sharing. B Test is performed in hypertonic saline (5%saline) or albumin saline. C Coomb, Mourant and Race devised a reagent: Rabbit anti-human gamma globulin. D Helps to detect the blood group and for cross matching. 💡 Explanation Heterophile agglutination test is? ✓ Correct Answer: A. Heterophile antibody that reacts with the microorganism or cells of unrelated species due to common antigen sharing.