[Immune safety in blood transfusions].

Immune security of blood donation is defined by all means aiming at reducing or eliminating the immune risk related to blood donation. It concerns the whole transfusion process from the blood donor to the receiver. The immune risk of blood donation is directly related to the polymorphism of molecular and cellular blood groups systems. Immune security consists in avoiding the meeting of antigens and augmented by the direct baneful consequences of the immune conflict. This requires the previous immune characterisation of blood products and of the patients and of their compatibility, which must be strongly maintained along the transfusion process. To control this process, which is still too much deficient, represents the true guarantee of immune security of blood donation.