Do You Know
Your Blood Type?

It will fall into one of these eight blood types.

No matter which blood type you have, your blood is critically important and helps save lives. After you donate for the first time, you may also find that you’re a rare blood type donor. A person with a rare blood type does not have better or worse blood — it’s just a genetic difference which means that your donation may be someone’s only hope for survival. 

Click on the blood type below to learn more:

What Determines
Your Blood Type.

Your blood type is determined by the presence or absence of markers (also known as, antigens) on the surface of red blood cells. There are 8 possible blood variations or types: O-, O+, A-, A+, B-, B+, AB- and AB+. The plus or minus sign after ABO blood type represents the presence or absence of the Rh antigen on the surface of your red blood cells.