Pathologist | Blood Banking & Transfusion Medicine Questions Hematologist

Why Is O the universal blood donor?

I have the O blood type. Why Is O the universal blood donor?

4 Answers


They are called universal donor because they can donate blood to type A, B and doesn’t have RH factor. The fact that the type O blood doesn’t have A, B or RH antigen, makes it an universal blood donor.
Because it does not have proteins to which other blood types would react.
Because you don’t have antibodies to A or B blood types
The red blood cells in O type blood usually do not react to the antibodies in a recipient's serum.

RB Thomas, MD