What Is Hemolytic Disease of the Fetus and Newborn? Hemolytic disease of the fetus and newborn (HDFN) is a blood disorder that happens when your blood type doesn't match your baby's blood type during ...
Put simply: the RH factor is an inherited protein found on the surface of the red blood cells in your system. Having the protein means RH positivity. But if you don't have the protein, you're RH ...