Jehovah’s Witnesses have a religious prohibition to major blood fractions including: red blood cells granulocytes, platelets, plasma and whole blood.
Autologous blood transfusion is also refused because it is removed blood from the body.
The decision regarding the use of mind blood fractions derived from blood products such as cryoprecipitate and immunoglobulins is left to the individual.
Some individuals decline blood transfusion for personal reasons, fear of infection or immune reaction.