<unk>  <unk>  is human blood from a standard blood donation. It is used in the treatment of massive bleeding, in exchange transfusion, and when people donate blood to themselves. One unit of<unk>  (~517 mls) brings up hemoglobin levels by about 10 g/L. Cross matching is typically done before the blood is given. It is given by injection into a vein. Side effects include red blood cell breakdown, high blood potassium, infection, volume overload, lung injury, and allergic reactions such as anaphylaxis.<unk>  is made up of red blood cells, white blood cells, platelets, and blood plasma. It is best within a day of collection; however, can be used for up to three weeks. The blood is typically combined with an anticoagulant and preservative during the collection process. The first transfusion of<unk>  was in 1818; however, common use did not begin until the First and Second World Wars. It is on the World Health Organization's List of Essential Medicines. In the 1980s the cost of<unk>  was about US$50 per unit in the United States.<unk>  is not commonly used outside of the developing world and military. It is used to make a number of blood products including packed red blood cells, platelet concentrate, cryoprecipitate, and fresh frozen plasma.
Whole blood
Washed red blood cells
Neohemocyte
Blood plasma
Packed red blood cells
Cryoprecipitate
Hypoxia preconditioned plasma
Autologous conditioned serum