The rarity of, and demand for, this type of blood emphasizes the importance of blood donors.Ĭlick here to learn more about blood types. As such, the American Red Cross suggests that when people, especially those with rare blood types, need blood, the best matches tend to come from people of the same race or ethnic background.įor this reason, some blood centers collect ethnic information from blood donors.įor some conditions, such as thalassemia and sickle cell disease, this matching is even more important because these conditions are more common among certain ethnic communities, and people may need frequent transfusions.įor example, only 2% of donors have a rare subtype of blood that doctors often use to treat sickle cell disease, but demand for it is increasing by 10–15% each year. These genetic factors tend to run in ethnic groups. The genes that a person inherits from their parents determine the mix of antigens and proteins in their blood. If it is present, the blood group is Rh-positive, but if it is absent, the blood group is Rh-negative.Ĭombining these two characteristics yields the eight most common blood types. Red blood cells may have another antigen called the Rh antigen on their surface. Blood group AB has both A and B antigens.Blood group O has neither A nor B antigens.Blood group A has A antigens on the red blood cells.

This system classifies blood types as follows: These define blood types according to which antigens are present on red blood cells. People can define blood types using the ABO and Rhesus (Rh) blood group systems. Note however that not all of the ethnic groups share the same proportions of the b negative blood type.Share on Pinterest A person’s blood type may fall into any of the 36 human blood groups. Some patients require a closer blood match than that provided by abo positive negative blood typing.īlood type by race ethnicity. It reaches its highest frequency in central asia and northern india while it is believed to have been entirely absent from native american and australian aboriginal populations prior to the arrival of europeans in those areas. O positive is the most common blood type. Because few people have b negative blood type this rare blood is not needed very often. For instance researchers estimate that just 1 in 6 million people have the rzrz blood type. This list concerns blood type distribution between countries and regions blood type also called 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. Most people are either a positive or o positive and the fewest are ab negative. Because blood types are genetic they are inherited from the parents blood types have different racial and ethnic differences. In particular type o negative blood is in high demand because it s the one most often used for emergencies when there may not be time to determine a patient s blood type.īlood types and ethnicity.

However without having a proper network it can be a race against a clock to get fitting blood b to the patient in crisis. Overall in the world b is the rarest abo blood allele. Here s a breakdown of the most common and least common blood types by ethnicity.īlood types vary by ethnic group. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system. Kell b negative and vel negative blood types some of these blood types are extremely rare. O a b and ab and two th factors positive or negative. This blood type is present in about 2 in caucasians 1 in african american 1 in hispanic and 0 4 in asian. Pin On Rh Negative Blood Due to demand for this universal donor type according to the red cross.ī negative blood type ethnicity. More hispanic people for example have o blood type while asian people are more likely to be type b. It is one of the rarest blood types in the world.

B negative blood type ethnicity