What is Anti-D Injection? Anti-D injection, also known as Rh immunoglobulin, is a medical treatment commonly administered to women who are Rh-negative and pregnant. The Rh factor is a protein found on the surface of red blood cells. If a mother is Rh-negative and the baby she is carrying is Rh-positive, there can be complications where the mother's immune system may develop antibodies against the baby’s blood cells. This can lead to a condition known as hemolytic disease of the newborn, which can be life-threatening for the baby. To prevent this from happening, Anti-D injections are given to Rh-negative women during pregnancy and after childbirth. The injection works by preventing the mother’s immune system from forming antibodies against Rh-positive blood cells, thus safeguarding future pregnancies and the health of the baby. Typically, Anti-D injections are given at 28 weeks of pregnancy and again after delivery, but they may also be administered after any event that may ca...