ALL DEFINITIONSBlood TransfusionDefinitionA blood transfusion is a medical procedure in which donated blood or blood components are infused into a patient's bloodstream to replace lost blood or to treat certain medical conditions.Related SpecialistsShowing 3 of 44Natalia NeparidzeMDJuan VasquezMDAydin AriciMDMore Related SpecialistsRelated Fact SheetsBlood TransfusionsBlood Transfusions for ChildrenApheresisWhat Causes Stomach Cancer?Blood CancersRelated DepartmentsLaboratory Medicine