Least Common Blood Type

December 05, 2020

Of the eight different common blood types ab negative is the least common blood type in the united states according to the american red cross. While there are at least 33 blood typing systems only two are widely used.

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Only around 1 in every 6 million people have rhnull blood.

Least common blood type. Is ab with less than 1 of the population having this type. That being said b blood is the least common group across the. Dean 2005 2 1 4.

Your blood also contains antigens which are proteins and sugars that sit on red blood cells and give blood its type. The highest frequencies are found in small unrelated populations. O positive is the most common type followed by a positive as the second most common and then b positive.

The rarest blood type is called rhnull. Statistics from the american red cross show that the following are the most rare forms of the. The least common blood type in the u s.

Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross. In countries such as austria denmark norway and switzerland about 45 50 of the population have this blood type whereas about 40 of poles and ukrainians do so. In general the rarest blood type is ab negative and the most common is o positive.

Central and eastern europe type a is common in central and eastern europe. And b blood is more common.

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