During your visit to our office you will receive a finger-stick blood test. This is performed in order to check your blood for an iron count and Rh factor. If your blood is found to be Rh negative you will need an injection of Rhogam, at an additional charge, after your abortion. Rhogam prevents antibodies from being formed in your blood that would cause problems with future pregnancies. If you're Rh negative, it is important to receive the Rhogam injection with every pregnancy.