Red blood cells are the most common transfused blood product. They contain hemoglobin, which the body needs for oxygen and carbon dioxide transportation. People who have lost blood or who have anemia receive red blood cell transfusions. Platelets and clotting factors help to stop bleeding. People with conditions that reduce the production of these blood cells or cause spontaneous bleeding require platelet transfusions. Blood plasma refers to the liquid component of blood. It contains liquid, clotting factors, proteins, vitamins, and electrolytes. Severe burns, liver failure, and certain infections call for this type of transfusion.

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