Transfusion medicine is a specialized branch of medicine that deals with the collection, processing, and transfusion of blood and blood products. Synonyms for transfusion medicine include blood banking, hematology, blood transfusion, and immunohematology. Blood banking involves the collection and storage of blood and blood components for transfusion. Hematology deals with the study of the blood system, including blood disorders and diseases. Blood transfusion refers to the process of transferring blood or blood products into a patient's bloodstream to replace lost blood or treat an underlying condition. Immunohematology involves the study of blood groups and their compatibility for transfusion purposes. Each synonym for transfusion medicine highlights a specific aspect of this vital medical specialty.