Not all blood is alike. Learn about blood typing and the rarest and most common types of blood and how they can impact your blood donation.

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 · Blood types are a classification of blood based on the presence or absence of specific antigens on the surface of red blood cells. These antigens determine the body’s immune response to …

A blood type (also known as a blood group) is a classification of blood based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs).

Dec 7, 2025 · There are eight main blood types, defined by the ABO system and the Rh factor. Type O-negative blood is a universal donor, and AB positive blood is a universal recipient. During pregnancy, …

Dec 26, 2024 · Blood types are important because they affect blood transfusions, pregnancy outcomes, and blood donation. This article outlines the different blood types and their practical application in …

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. …

Feb 19, 2025 · Learn what determines your blood type and why it's important. Understand blood type compatibility, donation guidelines, and the need for safe transfusions.

Sep 9, 2025 · What determines someone’s blood type? Our different blood types are determined by the presence or absence of certain antigens (unique substances) on the surface of our red blood cells.

Nov 18, 2025 · Your red blood cells have special markers on the surface that determine your blood type. These markers (antigens) help your body recognize cells that belong inside you.