Author: Anonymous

A patient’s serum agglutinates all adult O cells but not cord cells. The antibody is IgM, cold-reactive, and enhanced by enzymes. What is the most likely specificity? (M2.1) 

A Kell-negative mother develops anti-K. Fetus shows anemia with low bilirubin. What distinguishes this from anti-D HDFN? (M1.4)

Which Kidd phenotype resists lysis in 2M urea? (M2.4)

A patient’s ABO typing yields the following reactions: Anti-A Anti-B Anti-A,B A1 cells A2 cells B cells 0 4+ 4+ 0 0 0 What is the most likely explanation for this ABO discrepancy? (M1.1)

A transfused patient develops hemoglobinuria and severe hemolysis. Antibody screen shows IgG reactive at 37°C, destroyed by papain. What antibody is suspected? (M1.5)

The human blood group glycophorin molecules are heavily glycosylated and  carry the vast majority of which  membrane-associated carbohydrate? (M2.2)

A Polynesian donor’s RBCs resist lysis in 2M urea. Which allele explains this? (M2.4)

A patient’s ABO typing yields the following results: Anti-A Anti-B Anti-A,B A1 cells A2 cells B cells 0 0 1+ 1+ 0 4+ Auto DAT Antibody  screen 0 0 0 What is the most likely explanation for this ABO discrepancy? (M1.1)

A patient with recessive Lu(a–b–) develops anti-Lu3.What units should be issued? (M1.5)

A patient with Fy(a–b–) of African ancestry does not produce anti-Fyb. Why? (M1.3)