To detect 1. the presence of IgG alloantibody in the pregnant individual directed against human platelet antigens (HPAs) and to determine the pregnant individual's human platelet antigen status and 2. the HPAs of the partner/neonate
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Samples should be sent from the pregnant individual and partner (HPA antigen status) at the same time or the pregnant individual and neonate (HPA antigen status) at the same time.