An antigen found on the red blood cells of most people. Individuals with the Rh factor are considered as Rh positive, while those without the Rh factor are considered Rh negative.

Rh factor, like the blood types A, B, and O, is inherited from one's parents. Through a simple blood test, blood type and the presence of the Rh factor can be determined. About 85% of white Americans and 95% of African Americans are Rh positive. A person's state of health is not affected by the presence or absence of Rh factor. Importance of the Rh factor

Importance of the Rh Factor

The Rh factor, a blood protein, plays a critical role in some pregnancies. If an Rh negative woman is pregnant with a fetus who is Rh positive, her body will produce antibodies against the fetus's blood. This can cause Rh disease, also known as hemolytic disease...