why is o the universal blood donor

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You can change your mind at any time. By creating an account, you agree to the and, including the. You may receive email notifications, alerts and other notices from Sharecare. You can opt-out at any time. Although all blood is made of the same basic elements, not all blood is alike. In fact, there are eight different common blood types, which are determined by the presence or absence of certain antigens substances that can trigger an immune response if they are foreign to the body.


Since some antigens can trigger a patient s immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching. The ABO Blood Group System Group A Group B Group AB Group O Group O can donate red blood cells to anybody. It is the universal donor. Group A can donate red blood cells to A s and AB s.


Group B can donate red blood cells to B s and AB s. Group AB can donate to other AB s, but can receive from all others. In addition to the A and B antigens, there is a third antigen called the Rh factor, which can be either present (+) or absent ( ). In general, Rh negative blood is given to Rh-negative patients, and Rh positive blood or Rh negative blood may be given to Rh positive patients. The universal red cell donor has Type O negative blood type.


The universal plasma donor has Type AB blood type. Blood Types and the Population O positive is the most common blood type. Not all ethnic groups have the same mix of these blood types. Hispanic people, for example, have a relatively high number of O s, while Asian people have a relatively high number of B s. The mix of the different blood types in the U. S. population is: How Is My Blood Type Determined?

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