Which peripheral blood smear finding suggests thrombotic thrombocytopenic purpura (TTP)?

Updated: May 25, 2021
  • Author: Theodore Wun, MD, FACP; Chief Editor: Srikanth Nagalla, MD, MS, FACP  more...
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Peripheral blood smears reveal moderate-to-severe schistocytosis.

Early in the course of illness, schistocytes may not be seen, but, eventually, they will be present. Some consider schistocytosis the sine qua non for diagnosis.

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