How blood types work?

By: Haadi Hafeez M.D.
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Determining what blood type you are depends on the presence of specific antigen types or lack thereof attached to circulating red blood cells.


Blood groups include Group A, B, AB, and O, with each group having their corresponding group letter antigen attached to their red blood cells, for example, Group A has A antigens on their red blood cells, while Group B has B antigens.


It is important to note that a specific blood group will have antibodies against the antigens of another, for example, Group A blood group will have Anti-B antibodies, and vice versa. Group O blood groups, on the other hand, does not have A or B antigens but do carry Anti-A and Anti-B antibodies, making them universal donors, but they are only able to receive Group O blood transfusions.


While Group AB blood type carries both A and B antigens, and are devoid of any antibodies; making them universal receivers.

This article, and the products mentioned are not intended to diagnose, treat, cure, or prevent any disease. Please see your health care provider before taking any supplements or starting a new program.

Having a deep passion for science and education, Haadi career path has led him to pursue a future in medicine, successfully achieving the distinction of MD. He is always in the pursuit of academic knowledge through research and medical communications, and enjoys writing educational medical content to reach a broader audience; helping readers make informed medical decisions.

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