hemotherapy hemotherapy hemotherapy (/hiːməˈθɛrəpi/ hee-mə-therr-ə-pee) or hemotherapeutics (/hiːməθɛrəˈpjuːtɪks/ hee-mə-therr-ə-pew-tiks) is the treatment of disease by the use of blood or blood products from blood donation (by others or for oneself). it includes various types, such as: blood transfusion packed red blood cells transfusion fresh frozen plasma transfusion plasmapheresis of various kinds, including plasma exchange autohemotherapy, with autologous blood that is usually modified in some way