An unidentified woman from Guadeloupe has the rarest blood type on Earth, to the extent that she’s only compatible with herself. The 68-year-old is thus far the only known member of the blood group ...

Blood typing is a test to determine a person's ABO and Rh (the D antigen) type. It's essential to know your blood type if you need a blood transfusion or are pregnant.

Medically reviewed by Amelia MacIntyre, DO One of the most important characteristics of blood is its type. Knowing your blood ...

The ABO-Rh system of blood group typing is an immensely successful method that helps medical professionals safely perform blood transfusions throughout the world. Scientists from the French Blood ...

Learn how to find out your blood type, including testing when blood is drawn and testing that requires no blood. Also learn how to find your blood type for free.

Many people know where they fit into the classic ABO blood typing system, which designates blood as type A, B, AB or O. But these four basic blood groups aren't the end of the story. So how many ...

Orange High School student scientists recently had the opportunity to learn firsthand how blood-typing labs operate and to discover their own blood types.

Orange High School student scientists recently had the opportunity to learn firsthand how blood-typing labs operate while discovering their own blood types.

Knowing their blood type can help people better understand their health and be more informed about potential treatments. A person can find out their blood type with a blood test or other methods.

Many people know where they fit into the classic ABO blood typing system, which designates blood as type A, B, AB or O. But these four basic blood groups aren't the end of the story.