What Is ?

Blood Donor

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:

Blood Types

Some patients require a closer blood match than that provided by the ABO positive/negative blood typing. For example...

Read more at:
American Red Cross

that's it!