If you have an Rh-negative blood type, you are among a select group of people. As a member of this rare blood group, you may be able to help prevent Hemolytic Disease of the newborn or HDN. Your plasma contains a specific antibody that can be used as a treatment for this terrible disease and save babies’ lives. Rh-negative men and women between the ages of 18 and 65 are eligible for this program. If you’re a woman you need to be either post-menopausal or surgically sterile by tubal ligation or hysterectomy to participate and meet all other criteria for donating plasma.