Mrs. RF is a 29-year-old female who has been admitted for delivery of her third child. She has no history of transfusion. History check reveals a group and screen was performed 11 months earlier.
Results from that admission:
- O Rh negative
- Antibody screen: negative by LISS IAT
A group and screen is ordered as a precaution and as a consequence of the difficult delivery of her second child. A healthy infant is delivered and the cord blood is sent to the lab for testing.
- The laboratory SOP for maternal-fetal testing protocol requires an ABO/Rh and DAT on the cord blood.
- A maternal group and screen is performed as ordered.
Discussion and Resolution
- British Columbia Provincial Blood Coordinating Office. Technical resource manual for hospital transfusion services. Vancouver: Provincial Blood Coordinating Office;2000. See RT.003 - Weak D typing.
- Canadian Society for Transfusion Medicine. CSTM standards for transfusion medicine, 6th ed. Saskatoon: Canadian Society for Transfusion Medicine;1999.
- Judd WJ. .Practice guidelines for prenatal and perinatal immunohematology, revisited (Transfusion 2001 Nov; 41(11): 1445-52).
- Lopez-Plaza I. Immune-mediated hemolytic disease of the newborn. ITx in Pittsburgh
- Vengelen-Tyler V, editor. Technical manual. 13th ed. Bethesda, MD: American Association of Blood Banks;1999.