![]() Whether you have AB blood type or group B blood or another blood group depends on the blood type of your mother and father. Meaning, like eye color, your blood type is passed on to you genetically from your parents. The ABO system is based on antigens that are inherited. It is worth noting that while universal red cell donors are people with type O negative blood, universal plasma donors have type AB blood (because they have neither anti-A nor anti-B antibodies in the plasma). The need for O negative is highest because it is the universal donor blood used for emergency transfusions. This is because O positive is the most common blood group (37% of the population). Type O (both positive and negative) is in high demand and routinely in short supply at hospitals. However, only about 7% of the population in the U.S. This is because the red cells don't have A or B antigens and don’t have the Rh antigen either. It can also be used when there is a limited supply of the exact matching blood group. The blood group O negative is the safest to give to someone whose blood type is unknown, for example, in a life-threatening emergency. People with O negative blood are universal red cell donors, meaning they can donate blood to a person with any blood type. If you lack an antigen that 99.99% have, your blood type is labeled extremely rare. ![]() You have a rare blood type if you don’t have specific antigens that 99% of people have. In addition to the 8 common blood types, there is also something called a “rare blood type.” Besides the A and B antigens, there are more than 600 other antigens on red cells. If this antigen is present on the red blood cells, the blood type is positive, and if it is absent, the blood type is negative. In addition to this, there is an Rh antigen or Rh factor. Blood group O has no antigens on the red blood cells and both anti-A and anti-B antibodies in the plasma.Blood group AB has both A and B antigens on the red blood cells and neither anti-A nor anti-B antibodies in the plasma.Blood type B has only the B antigen on the red blood cells and anti-A antibodies in the plasma.Blood type A has only the A antigen on the red blood cells and anti-B antibodies in the plasma.Your blood type depends on two antigens (the A or B antigens) present on the red blood cells and the anti-A or anti-B antibodies present in the plasma. What is the difference between the blood groups? Your blood type depends on the type of antigens and antibodies present in your blood. For example, they recognize foreign substances and alert the immune system about their presence. Antibodies are protein molecules found in the plasma and play a significant role in the body’s natural defense system. They activate or stimulate the body’s immune response. Antigens are protein molecules found on the surface of red blood cells. Human blood is made up of four main components - red blood cells, white blood cells, platelets, and a liquid called plasma. To understand the difference between the blood groups, we need to understand antibodies and antigens. What makes one blood type different from another? So, there are eight main blood types: A negative, A positive, B negative, B positive, AB negative, AB positive, O negative, and O positive. Each blood group can also either be Rhesus D (RhD) positive or RhD negative. There are four main blood types in the ABO blood groups system - A, B, AB, and O - based on what blood group antigens are present on the surface of the red blood cells. Receiving a transfusion of the wrong blood type can be life-threatening.Įach person’s blood type is determined by genes inherited from their parents. Matching blood types is necessary for a safe blood transfusion. Please continue reading to learn more about the four major blood groups and what they mean for blood transfusions. ![]() The most common method of classifying human blood is the ABO blood group system. But before you can donate blood, you should know your blood group. The importance of blood donation is obvious. A car accident victim can require 100 units of blood, and one donation can save 3 lives. Someone needs blood or platelets every 2 seconds in the United States, and nearly 16 million blood components are transfused each year.
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