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 ...

Most people are familiar with the common blood groups A, B, AB and O, along with the Rh factor that determines whether a type is positive or negative. Yet new research reveals how surprisingly complex ...

See more of our coverage in your search results. Add The New York Post on Google Most people don’t spare a thought for their blood type unless they’re in need of a transfusion — but could yours hold ...

In a routine blood test that turned extraordinary, French scientists have identified the world’s newest and rarest blood group. The sole known carrier is a woman from Guadeloupe whose blood is so ...

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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.

In 2011, a woman from the French overseas region of Guadeloupe underwent routine tests before a surgery. Strikingly, doctors could not identify her blood group, which was so unique that they did not ...

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