![]() ![]() In particular, type O-negative blood is in high demand because it's the one most often used for emergencies, when there may not be time to determine a patient's blood type. ![]() ![]() Type O blood is often in short supply in hospitals, due to demand for this universal donor type, according to the Red Cross. People with type O blood are called "universal donors" because this type can be used for patients with any blood type. What blood type is the "universal donor"? Type O blood can be used for patients with type A, type B, type AB and type O blood. What's more, type A blood can be used for transfusions for patients with type A or type AB blood type B blood can be used for patients with type B or type AB blood and type AB blood can be used for patients with type AB blood. People who are Rh-negative can only receive Rh-negative blood, but people who are Rh- positive can receive either Rh-positive or Rh-negative blood, the Red Cross says. Blood type and transfusionsīlood typing is particularly important for blood transfusions, because certain antigens on blood cells can trigger a person's immune system to attack the donated blood. Yes, a person's blood type is genetic, inherited from his or her parents, according to the Red Cross. A person's blood type is designated as "positive" if they have the Rh protein on their red blood cells, and "negative" if they don't have this protein. Individuals with type AB blood have both people with type O blood have neither.Īnother protein, the " Rh factor" - also known as the "Rhesus" system - is also present or absent on red blood cells. Two of the main antigens used for blood typing are known as "A antigen" and "B antigen." People with type A blood only have A antigens on their red blood cells and those with type B blood have only B antigens. The researchers used blood group A as a reference for how likely people were to catch the coronavirus.A person's blood type is based on whether or not they have certain molecules or proteins - called antigens - on the surface of their red blood cells, according to the National Institutes of Health. The list below shows the percentage of donors with each blood type:ĭata from NHS Blood and Transplant, accurate at December 2018. There are eight main blood types but some are rarer than others. If there's no reaction, donor blood with the same ABO and RhD type can be used. If you have a blood transfusion - where blood is taken from one person and given to another – your blood will be tested against a sample of donor cells that contain ABO and RhD antigens. If the blood does not react to any of the anti-A or anti-B antibodies, it's blood group O.Ī series of tests with different types of antibody can be used to identify your blood group. If, for example, the solution contains anti-B antibodies and you have B antigens on your cells (you're blood group B), it will clump together. To work out your blood group, your red cells are mixed with different antibody solutions. Your blood group is identified by antibodies and antigens in the blood. This is so your blood can be matched to someone with the same blood should they need it.īlood is made up of red blood cells, white blood cells and platelets in a liquid called plasma. Your blood group will be checked if you give blood through NHS Blood and Transplant, and it will be recorded on your official donor card. You can find out your blood group if donate blood, which only one in 25 people do, according to the NHS. Sometimes a healthcare professional will check your blood type for medical reasons or if you need a blood transfusion. GPs do not routinely do tests for people's blood groups. ![]()
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