Testing For Blood Type
A nurse will first need to take a blood sample to test for your blood type. This sample is then mixed with antibodies against type A and B blood. They then observe the sample to check if the blood cells stick together or not. If they do stick together, then they know that the blood reacted with one of the antibodies. They then take the liquid part of your blood that doesn’t contain cells and mix it with type A and type B blood. Individuals with type A blood contain anti-B antibodies, whereas individuals with type B blood will have anti-A antibodies. However, both types of antibodies can be found in Type O blood. This means that type O blood can be given to individuals within any blood type group.
Read More: Which Blood Type is The Rarest? Here Are The Least to Most Common Blood Types