Autoimmune hemolytic anemias include warm and cold reactive autoimmune hemolytic anemias (WAIHA and CAD), paroxysmal cold hemoglobinuria (PCH), and drug-induced hemolytic anemias. If autoimmune hemolytic anemia is suspected, the clinical history should be communicated to the transfusion service, because specific tests to confirm these diagnoses are not routinely performed. This includes evaluat...