An Indirect Coombs test is used to determine if a pregnant patient is Rh-positive or Rh-negative.
Rh-negative patients will receive Rh Immune Globulin (RhoGAM):
- At ~26 - 28 weeks gestation.
- After giving birth to a Rh-positive baby (within 72 hrs).
RhoGAM prevents formation of antibodies (i.e. Rh sensitization) that can cause hemolytic disease during future pregnancies.
