Coagulation
Bleeding disorders
Laboratory approach


Topic Completed: 1 June 2012

Revised: 4 January 2019, last major update June 2012

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PubMed Search: Laboratory [title] bleeding disorders

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Cite this page: Parsons J. Laboratory approach. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/coagulationbleedingdisorderlab.html. Accessed October 19th, 2019.
Definition / general
  • Laboratory tests should be ordered if:
    • History or physical exam is suspicious for bleeding disorder or
    • For routine preoperative testing (PT, PTT, platelet count)
  • See algorithms for prolonged PT, prolonged PTT, abnormal platelet count or hereditary bleeding disorder (PT, PTT, and platelet count normal)
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