The Most Common Blood Type

February 01, 2021

In the united states type o positive is the most common blood type. O blood is the most common blood type in the world and while it is not quite as universal as o blood o can be given to all rh positive types but not the rh negative types it is still the most used blood according to the american red cross.

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The most common blood type. Additionally rh positive blood types are much more common than rh negative blood types which is another reason why o blood is always needed and. Blood type b makes up only 10 of the population while blood type ab is the rarest at 4. Central and eastern europe type a is common in central and eastern europe.

Type o is the most demanded blood type in hospitals both because it s the most common and because o negative blood is a universal donor type. Blood type a in both parents. Type o is the most demanded blood type in hospitals both because it s the most common and because o negative blood is a universal donor type meaning it is compatible with any blood type.

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. 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.

This means it is compatible with any blood type. Broken down by race type o positive s prevalence is 37 among caucasians 47 among african americans 39 among asians and 53 among latino americans according to the american red cross. The most common blood type.

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. The least common blood types are type b negative and type ab negative. If both of your parents have blood type a then your blood type will either be type a or o.

You ll find below a few factors on how a particular blood type is formed which has made o the most common blood type. Blood type b is completely absent in most north and south american indians. Is ab with less than 1 of the population having this type.

And if you disregard the rh and rh blood type classification system and just look at o a b and ab blood types the most prevalent blood type in the us is blood type o 44 with blood type a at a close second 42. 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. Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross.

In general the rarest blood type is ab negative and the most common is o positive.

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