Post Transfusion Purpura Investigation

Test description

Post Transfusion Purpura (PTP) is a rare delayed transfusion reaction where a patient develops a sudden and dramatic drop in their platelet count typically between 6-10 days following red blood cell transfusion. Anti-HPA-1a antibody is most commonly associated with this reaction, however other HPA antibody specificities have also been found. Investigation for suspected PTP includes HPA antibody testing and HPA genotyping.

Post Transfusion Purpura Investigation (PDF)

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