A comprehensive guide to testing, medical imaging and other health and illness prevention-related services. Click on the screening category to learn more about these services, individual tests & screening items
Testing for blood type (ABO) and also Rhesus (Rh) factor. Rh factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you're Rh positive, while you are Rh negative if your blood lacks it. It is most common to be Rh positive. Having an Rh negative blood type is not an illness and usually does not affect your health. However, it can affect your pregnancy. Your pregnancy needs special attention if the mother is Rh negative and the baby's father is Rh positive.