Question

Which blood type is considered the universal donor? Why can this blood type be given to all other blood types?

Answer 1

O positive is the most common blood type and most likely to be transfused.
O negative donors are the “Universal Donor.” People with O negative blood are universal red blood cell donors. This means that their red blood cells can be transfused to any blood type.

Answer 2

Type O blood type is considered universal.