I had to have a pregnancy terminated. I'm Rh neg but I didn't get my rhogam shot until 81 hours after. Could it still work? When can I find out?

It still could work. Rhogam can work up to 96 hours, so you have a good chance of being protected. You need an antibody screen drawn in about 6-8 weeks to be sure. Good luck! Dr. S.
12weeks later. The Rhogam is a passive antibody designed to prevent an immune response to occur in your own body. It will last in your system for up to twelve weeks. After twelve weeks, you should ask your provider to get a Blood Type and Antibody Screen. Your antibody screen at that point should be negative again, meaning your body did not form antibodies to Rh. .