How Is My Blood Type Determined? It’s inherited. Like eye color, blood type is passed genetically from your parents. Whether your blood group is type A, B, AB or O is based on the blood types of your …

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Mar 14, 2023 · There are four main blood types: A, B, AB and O. Blood bank specialists determine your blood type based on whether you have antigen A or B on your red blood cells.

Nov 28, 2023 · Learn about blood types, including A, B, AB, O and Rh+ and Rh-. See which blood type is the universal donor and universal recipient.

Less than 4% of the U.S. population have AB positive blood. AB positive blood type is known as the “universal recipient” because AB positive patients can receive red blood cells from all blood types.

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AB positive patients can receive red blood cells from any eligible blood donor! Also known as the blood type of universal recipients, AB positive is the only primary blood type compatible with all others.

Dec 20, 2025 · 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.

Apr 18, 2026 · The ABO system categorizes blood into four main types: A, B, AB, and O. Your blood type is further defined by the presence (+) or absence (–) of the Rh factor, an antigen on your red …