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There are four major blood groups determined by the presence or absence of two antigens, A and B, on the surface of red blood cells. In addition to the A and B antigens, there is a protein called the Rh factor, which can be either present (+) or absent (–), creating the 8 most common blood types ( A+, A- , B+, B- , O+, O- , AB+, AB- ).
Matching compatible blood types is important for blood transfusions. Knowing your type and compatibility is crucial if you ever need a transfusion. 4.5 million Americans receive a transfusion each year.
For the transfusion to do its lifesaving work, hospital staff must ensure that the blood being given is compatible with the patient’s own blood type. Your blood type is inherited from your parents, much like your eye and hair color. Take a look at our genetic chart.
Type O positive blood is given to patients more than any other blood type, which is why it’s considered the most needed blood type. 38% of the population has O positive blood, making it the most common blood type.
Jun 27, 2023 · Like your height and 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 mother or father. Blood Type Compatibility. If you have type AB blood, you have both A and B antigens. This means you’re a universal recipient and you can receive any type of blood.
Mar 28, 2024 · Only 7% of the population has type O negative blood, while 38% has O positive blood, the most common blood type. O negative is the universal blood type. O positive red blood cells are not universally compatible to all types, but they are compatible to any red blood cells that are positive (A+, B+, O+ and AB+).
Jun 27, 2023 · The most commonly recognized blood groups are A positive, A negative, B positive, B negative, AB positive, AB negative, O positive, and O negative. The positive or negative sign next to the blood groups is known as the Rhesus (Rh) factor.
1 in 3 people have Type A positive blood, which is why it is one of the most common blood types. Learn more about Type A blood.
Learn about blood components, including platelets, plasma, white cells, and granulocytes, which can be extracted from a whole blood to benefit several patients from a single blood donation.
Every unit of blood is tested to identify the donor's blood group (O, A, B or AB) and Rh type, and screened for atypical or unusual red cell antibodies. Blood donations are tested for multiple disease markers. For a full list of commonly tested infectious diseases, click here.
