TY - BOOK AU - Landy, Helain J TI - New laboratory procedures and Rh blood type changes in a pregnant woman SN - 0029-7844 KW - *Immunologic Tests KW - *Pregnancy Complications, Hematologic/di [Diagnosis] KW - *Rh Isoimmunization/di [Diagnosis] KW - *Rh-Hr Blood-Group System/im [Immunology] KW - Adult KW - Female KW - Humans KW - Pregnancy KW - Rh-Hr Blood-Group System/ge [Genetics] KW - Rho(D) Immune Globulin/tu [Therapeutic Use] KW - MedStar Washington Hospital Center KW - Obstetrics and Gynecology, Maternal-Fetal Medicine KW - Case Reports KW - Journal Article N1 - Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006 N2 - BACKGROUND: A woman's candidacy for Rh immune globulin depends on whether her blood type is Rh-positive (D antigen-positive) or Rh-negative (D antigen-negative). New molecular blood-typing methods have identified variant D antigens, which may be reported as Rh-positive or Rh-negative depending on the laboratory method. We describe a case illustrating the effect of the new laboratory methods on a woman's candidacy for Rh immune globulin and present recommendations for interpreting the new test results; CASE: A 40-year-old woman presented for management of her third pregnancy. During her first pregnancy, she was typed as Rh-positive ("D") and did not receive Rh immune globulin. During her second pregnancy, she was typed as Rh-negative, in accordance with revised Rh-typing procedures. Anti-D antibody was detected. During her third pregnancy, she was genotyped as a partial D antigen, which was reported as Rh-negative; CONCLUSION: Revisions in laboratory procedures for Rh typing may present as a change in the Rh blood type of pregnant women-and as a change in their eligibility for Rh immune globulin UR - http://dx.doi.org/10.1097/AOG.0b013e31823f6f76 ER -