<unk>  is the branch of<unk>  that is concerned with the<unk>  of blood and blood components. The blood bank is the section of the clinical laboratory where medical technologists process and distribute blood products under the supervision of a medical director, often certified in Pathology or<unk> . The blood donor center, also under the supervision of a physician who may be a<unk>  specialist, is the facility that collects and processes blood products.<unk>  is a board-certified specialty recognized by the American Board of Pathology. Physicians from a wide range of backgrounds, including pathology, hematology, anesthesiology and pediatrics, are eligible for board certification in<unk>  following a 1-2 year fellowship.
Physicians certified in<unk>  are trained in blood product selection and management, immunohematology, apheresis, stem cell collection, cellular therapy, and coagulation. They are often considered a consultant for physicians who require expertise advice on the subjects listed above. 
In Denmark the subject is covered by the speciality "Clinical Immunology".<unk> ogy is not a recognized term in the US.
Transfusion medicine
Blood substitutes
Fluid
Blood transfusion
Radionuclide
Blood donation
Urination
Infection control