![]() It’s found in more concentrated amounts in small populations, such as 80% of the Blackfoot Indians of Montana. Blood type A : Type A ranks as the second most common blood type worldwide it is common in Central and Eastern Europe-about 45%-50% of the population in Austria, Denmark, Norway, and Switzerland have Type A blood, while about 40% of the population in Poland and Ukraine have Type A blood.Blood type O: This blood type is the most common worldwide, including in the United States and Western Europe among Indigenous populations in Central and South America, type O blood ranks at nearly 100%.Sometimes referred to as “golden blood,” fewer than 50 people in the world have this type of blood.Īdditionally, the percentage of a population that has a specific blood type varies by ethnicity. One of the rarest blood types is Rh-null (lacking all Rh antigens), according to the Cleveland Clinic. Certain rare blood types are unique to specific racial and ethnic groups for example, U-negative and Duffy-negative blood types are only found among African-Americans. However, not everyone’s blood falls into these eight categories. According to the American Red Cross, fewer than 1% of Americans have AB negative (AB-) blood, and fewer than 4% have AB positive (AB+) blood. Of the eight blood types, Group AB- is the least common blood type in the U.S.-and worldwide. O negative blood (O-): Red blood cells do not have the A and B antigens, but do not have the Rh factor.O positive blood (O+): Red blood cells do not have the A and B antigens and have the Rh factor.AB negative blood (AB-): Red blood cells have the A and B antigens, but do not have the Rh factor.AB positive blood (AB+): Red blood cells have the A and B antigens and Rh factor.B negative blood (B-): Red blood cells have the B antigen, but do not have the Rh factor.B positive blood (B+): Red blood cells have the B antigen and Rh factor.A negative blood (A-): Red blood cells have the A antigen, but do not have the Rh factor.A positive blood (A+): Red blood cells have the A antigen and Rh factor.Using these two categorization systems, there are eight blood types : It is more common to have Rh+ blood than Rh- blood. Each of the four blood types can be Rh-, meaning there is no Rh factor cell surface protein on your red blood cells, or Rh+, meaning Rh factor is present. Ascher explains.īlood types are further classified according to the Rh system, which identifies the presence or absence of the Rhesus (Rh) factor (a protein antigen) on the surface of red blood cells. Type O has no antigens, but both antibodies, and Type AB has both antigens, and no antibodies, Dr. For example, blood type A has A antigens and anti-B antibodies the opposite is true for type B blood. The most common ABO blood group is O, followed by group B, group A, and group AB (the least common).Īccording to Eric Ascher, DO, a family medicine physician at Lenox Hill Hospital in New York, blood types also indicate what antibodies (proteins that attack foreign red blood cells) your blood has. The four main blood types are A, B, AB, and O. This system categorizes blood types based on the presence or absence of specific markers (sugars) on red blood cells called Antigen A or B. There are four major blood types grouped by the ABO blood group system. RELATED: What does your blood type mean for your health? What are the different blood types? ![]() ![]() What’s more, the type of blood you can receive from a donor is dictated by your own blood type. Of the eight most common blood types, some are rarer than others. That’s because if you’re given an incompatible blood donation, your immune system will attack the donor blood by forming antibodies to destroy the unrecognized “foreign invaders.” If you’re ever in a life-threatening situation requiring a blood transfusion, your blood type will always be checked. Do you know your blood type? If you do not, you are like most people.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |