Bleeding disorders
Laboratory approach

Author: Jeremy Parsons, M.D. (see Authors page)

Revised: 2 March 2016, last major update June 2012

Copyright: (c) 2002-2016,, Inc.

PubMed Search: Laboratory [title] bleeding disorders
Cite this page: Laboratory approach. website. Accessed September 22nd, 2018.
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)