What’s more, type A blood can be used for transfusions for patients with type A or type AB blood type B blood can be used for patients with type B or type AB blood and type AB blood can be used for patients with type AB blood. People who are Rh-negative can only receive Rh-negative blood, but people who are Rh- positive can receive either Rh-positive or Rh-negative blood, the Red Cross says. A person’s blood type is designated as “positive” if they have the Rh protein on their red blood cells, and “negative” if they don’t have this protein.Ī person’s blood type is genetic, inherited from his or her parents, according to the Red Cross.īlood typing is particularly important for blood transfusions, because certain antigens on blood cells can trigger a person’s immune system to attack the donated blood. Individuals with type AB blood have both people with type O blood have neither.Īnother protein, the “ Rh factor” – also known as the “Rhesus” system – is also present or absent on red blood cells. Two of the main antigens used for blood typing are known as “A antigen” and “B antigen.” People with type A blood only have A antigens on their red blood cells and those with type B blood have only B antigens. The majority of people in any geographical region are rh positive.Īnd here s a more precise percentage breakdown from most common to least common blood types in the us.A person’s blood type is based on whether or not they have certain molecules or proteins - called antigens - on the surface of their red blood cells, according to the National Institutes of Health. The o blood type is the most common around the globe and is carried by nearly 100 of those living in south america. Yet when someone with a negative blood type needs blood only another person with a negative type can save his or her life.īlood type percentages refer to the number of people with a specific blood type within a population. Minority and diverse populations therefore play a critical role in meeting the constant need for blood. Approximately 45 percent of caucasians are type o positive or negative but 51 percent of african americans and 57 percent of hispanics are type o.įor example in the united states hispanic people have a relatively high number of people with. Using data from wikipedia and the standford blood center reddit user foiltape put together this pie chart that shows the most common and least common blood types in the us. Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system. In general the rarest blood type is ab negative and the most common is o positive. Some blood types are more common in certain groups. Blood type b is more common in asians 25 and less common in latin americans and caucasians both at 9. Up to 53 of latin americans and 47 of african americans have blood type o. It is the most common blood type among australian aborigines celts those living in western europe and in the united states. Is ab with less than 1 of the population having this type. The least common blood type in the u s.īefore the advent of dna sequencing and human leukocyte antigens typing blood type was the basis of paternity testing. 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. Genes determine blood type abo as well as rh. O negative is the universal blood type this means anyone can receive o negative blood. In comparison only 39 of asians and 37 of caucasians have this type. The most common blood type among americans is o 38 percent. Statistics from the american red cross show that the following are the most rare forms of the. O positive 37 4 percent a positive 35 7 percent b positive 8 5. Pin On Health Distribution of blood types.īlood type percentages us.
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