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Concept
Blood bank
Summary
A blood bank is a center where blood gathered as a result of blood donation is stored and preserved for later use in blood transfusion. The term "blood bank" typically refers to a department of a hospital usually within a Clinical Pathology laboratory where the storage of blood product occurs and where pre-transfusion and Blood compatibility testing is performed. However, it sometimes refers to a collection center, and some hospitals also perform collection. Blood banking includes tasks related to blood collection, processing, testing, separation, and storage.
For blood donation agencies in various countries, see list of blood donation agencies and list of blood donation agencies in the United States.
Several types of blood transfusion exist:
Whole blood, which is blood transfused without separation.
Red blood cells or packed cells is transfused to patients with anemia/iron deficiency. It also helps to improve the oxygen saturation in blood. It can be stored at 2.0 °C-6.0 °C for 35–45 days.
Platelet transfusion is transfused to those with low platelet count. Platelets can be stored at room temperature for up to 5–7 days. Single donor platelets, which have a more platelet count but it is bit expensive than regular.
Plasma transfusion is indicated to patients with liver failure, severe infections or serious burns. Fresh frozen plasma can be stored at a very low temperature of -30 °C for up to 12 months. The separation of plasma from a donor's blood is called plasmapheresis.
While the first blood transfusions were made directly from donor to receiver before coagulation, it was discovered that by adding anticoagulant and refrigerating the blood it was possible to store it for some days, thus opening the way for the development of blood banks. John Braxton Hicks was the first to experiment with chemical methods to prevent the coagulation of blood at St Mary's Hospital, London, in the late 19th century. His attempts, using phosphate of soda, however, were unsuccessful.
Official source
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