Blood group test determines your blood group. The test it called ABO typing. This test is essential if you need blood transfusion or if you would like to donate blood.
Also, blood typing is especially important for pregnant women. If the mother is Rh-negative and the father is Rh-positive, the child will likely be Rh-positive. In these cases, the mother needs to receive a drug called RhoGAM. This drug will keep her body from forming antibodies that may attack the baby’s blood cells if their blood becomes mixed, which often happens during pregnancy.
The ABO blood typing system groups your blood into one of four categories: