Blood and blood products are special medicines of human origin, used to replace the amount of blood lost in the recipient and correct abnormalities in the blood that cannot be replaced by any other solution. Blood is used in the treatment of most medical specialties. With blood, many advanced techniques can be developed. The need for blood and the use of blood represent the development of medicine.

Blood transfusion is the process of transferring missing blood products into the patient's veins. In the early days of blood transfusion, whole blood was used. Nowadays, medicine has developed and has prepared many blood products, so only the components that the patient lacks such as red blood cells, white blood cells, plasma, clotting factors and platelets are transfused...