You may have heard of the four basic blood types: A, AB, B, and O, and the positive or negative variations of these blood types. But did you know that these four types can be divided into many different blood types?

Rh incompatibility occurs when a mother with Rh-negative blood carries a baby with Rh-positive blood, which can lead to hemolysis - a serious condition for the baby if left untreated.

Blood group incompatibility between mother and child is one of the causes of neonatal jaundice. The degree of jaundice in these situations is often quite severe and can cause brain damage, followed by cerebral palsy, a serious sequela if not actively treated.

Performing blood type, Rh factor, blood count tests... helps screen and detect genetic diseases related to blood in mother and fetus. Blood tests during pregnancy are mandatory for pregnant women.

Most of us know that the common blood types include A, B, AB, O. Each blood type has a plus and minus blood group system. Each person is born with genetic inheritance from their father and mother, so they have 1 of the 8 blood group systems listed above and it does not change throughout life.

All pregnant women should be tested for Rh antibodies. This is one of the first and most important tests during pregnancy to determine whether the body carries the Rh protein in the blood.