Question

On the blood determines a persons blod type

Answer 1

The test to determine your blood group is called ABO typing. Your blood is mixed with antibodies against type A and B blood. Then the simple is checked to see whether or not the blood cells stick together.

Answer 2

It is determined by the presence or absence of certain identifiers on the surface of the red blood cells. There are four main ABO blood type groupings: A, B, AB, and O. These blood groups are determined by the antigen on the blood cell surface and the antibodies present in the blood plasma.