Blood Types Explained - A, B, AB and O

Blood type tests are done before a person gets a blood transfusion and to check a pregnant woman's blood type Human blood is typed by certain markers

O negative blood is known as the universal blood type because it is safe for everyone to receive O negative red cells

blood group In this method, RBCs are mixed with two separate solutions of type A or type B antibodies to see if they agglutinate If this blood clumps, this indicates the

blood type ABO test The ABO test shows that people have one of four blood types: A, B, AB, or O If your red blood cells have: Blood received in a transfusion must have