This Clinical Practice Update provides revised guidance on Rh testing and Rh D immune globulin administration for individuals undergoing abortion or experiencing pregnancy loss at less than 12 0/7 weeks of gestation. This document updates Practice Bulletin No. 225, Medication Abortion Up to 70 Days of Gestation (Obstet Gynecol 2020;136:e31–47); Practice Bulletin No. 200, Early Pregnancy Loss (Obstet Gynecol 2018;132:e197–207); and Practice Bulletin No. 181, Prevention of Rh D Alloimmunization (Obstet Gynecol 2017;130:e57–70).
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