How to Know Your Blood Type When you think about it, your blood type is one of the most fundamental aspects of your biology. Yet many people remain unaware of their classification.
As modern medicine and international travel become increasingly complex, knowing your blood type can be a matter of life and death. What Is Your Blood Type?
Blood types are determined by the presence or absence of specific antigens on the surface of red blood cells. These antigens trigger an immune response if they're foreign to the body.