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People with type AB+ blood can receive from any other blood type they are therefore "universal recipients." However, in most cases, recipients receive blood from a donor in their own group. You will notice that the type O- can give blood to anyone-it is described as "universal donor." It is the blood type used in emergency situations. The table below outlines donor/recipient compatibilities for red blood cell transfusions. Compatibility tests are conducted at the hospital before each transfusion.
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Incompatibility can lead to the rejection of the blood component and deterioration in the patient’s state of health. If a patient receives the transfusion of a blood component from a non-compatible group, their immune system will recognize the presence of foreign substances called antigens. The nationwide distribution is as follows:īefore proceeding with a transfusion, it is essential to know that the donor’s blood type is compatible with that of the recipient. Some blood groups are more common than others. In the Rh system, the presence or absence of the "D" substance on the surface of the red cell determines whether the blood is Rh positive (+) or negative (-). Blood types are categorized into "systems." There are four possible types in the ABO system: A, B, O and AB. Human blood types are determined by "antigens," substances found on the surface of the red blood cells.