ABO System Immunohematology Review 442
GROUP ANTIGEN(S) ON RBC ANTIBODY(S) IN SERUM
O Neither Anti-A, Anti-B
A A Anti-B
B B Anti-A
AB A & B Neither anti-A nor anti-B
O Neither Anti-A, Anti-B
A A Anti-B
B B Anti-A
AB A & B Neither anti-A nor anti-B