![]() ![]() First report of known rare Rhnull phenotype individuals in Iran.On my way home from Chinese lessons last week I stopped by the supermarket to buy a can opener and dish soap (not actually the easiest thing to find). Ethnic codes and blood donations: What’s the big deal? You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. Caucasian: Kell B-negative and Vel-negative blood types. ![]() East European and Russian Jewish: Drori A-negative blood type.Pacific Island and Asian: JKnull blood type.Native American and Alaskan native: RzRz blood type.African American: U-negative and Duffy-negative blood types.The American Red Cross data below list the rare blood type and the ethnic group in which it is most common: ![]() Some of these rare blood types and blood group systems are distinctly more common in certain ethnic groups. In addition, scientists have identified 36 different blood group systems, some of which can cause problems with blood transfusions. If only 1 in 1,000 people lack it, the individual’s blood type is very rare. Having an antigen that most people do not have, or missing an antigen that most people do have, means that an individual has a rare blood type.Īccording to the International Society of Blood Transfusion, if only 1 in 500 people are missing the same antigen as an individual, their blood type is rare. It is important to make a distinction between the rarest of the eight most common blood types and the extremely rare subtypes.
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