Add Yahoo as a preferred source to see more of our stories on Google. Close-Up Of Donated Blood In Bag Knowing your blood type is critical during emergency health situations. Knowing your blood type ...

Knowing your blood type can be beneficial for a number of reasons, including receiving the best transfusion for you, but it can also help you to protect your health. If you don't know what type you ...

Most humans fall into one of four blood groups — A, B, AB or O. Ordinarily, your blood type makes very little difference in your daily life except if you need to have a blood transfusion. Other WRAL ...

There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative. Knowing your blood type is important for safe blood transfusions and organ transplants. Type ...

A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.