how to tell what type of blood you are
Report Abuse. The two most common kinds of tests to determine your blood type: the ABO Test and the Rhesus (or Rh) Test. The ABO Test classifies people's blood into one of four types: A, B, AB, or O. If your red blood cells have the A antigen, you have type A blood.If your red blood cells have the B antigen, you have type B blood.If you have neither the A nor B antigen, you have type O blood. Your plasma contains antibodies against both type A and type B blood. If your red blood cells have both the A and B antigens, you have type AB blood.Your plasma does not contain antibodies against either type A or type B blood.our plasma contains antibodies against both type A and type B blood. If your red blood cells have both the A and B antigens, you have type AB blood. Your plasma does not contain antibodies against either type A or type B blood.