Is O-type blood considered a universal blood donor?

Type O blood is not a universal blood donor. Type O blood does not contain A or B antigens, and transfusion to people with other blood types can also cause transfusion reactions. It is recommended to transfuse the same blood type during blood transfusion, which can greatly reduce transfusion reactions and reduce the occurrence of hemolysis. Type O blood can be transfused to type A, B, AB, and O blood types, but never to panda blood.

Each blood type has different antigens and antibodies. If the antigens and antibodies cannot correspond, hemolysis reactions may occur, posing a threat to health and even life in severe cases. In emergency situations where there is no corresponding blood type, a small amount of Type O blood can be transfused for emergency, but Type O blood is not universal and can only be transfused in small amounts to achieve emergency effects.

Each blood type has different antibodies and antigens. Type A blood is A antigen and B antibody, Type B blood is B antigen and A antibody, Type AB blood contains both A and B antigens but no antibodies, and Type O blood contains both A and B antibodies but no antigens. None of the four blood types have corresponding antibodies and antigens, and only corresponding blood type transfusions can achieve a balanced state.

Strictly speaking, Type O blood is not suitable for everyone. However, compared to other blood types, Type O blood has a wider range of uses. Generally, in special cases, Type O blood can also be transfused to others. When transfusing blood, it is best to have the same blood type to avoid rejection reactions.