Transfusion Medicine Services Components Blood Component ABO Compatibility Chart Blood Component ABO Compatibility ChartPatient's ABO Group Compatible Red Blood Cells (RBCs) Compatible Plasma Group O Group O Group O, A, B, AB Group A Group A and O Group A and AB Group B Group B and O Group B, AB Group AB Group O, A, B, AB Group AB Platelet ABO CompatibilityWhile the same ABO as the patient is the first choice, any ABO type component may be used.Cryoprecipitate ABO CompatibilityWhile the same ABO as the patient is the first choice; any ABO type component may be used. Rh Compatibility - ONLY APPLIES TO RED BLOOD CELLS AND PLATELETS Rh + patients Can receive either Rh+ or Rh - components Rh - patients Will preferably receive Rh - components Note: Rh + may be given as warranted per blood bank inventory