How is protein C deficiency diagnosed in patients with acute thrombosis?

Updated: Jan 04, 2019
  • Author: Shamudheen Rafiyath, MD; Chief Editor: Perumal Thiagarajan, MD  more...
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The levels of protein C, protein S, and antithrombin are reduced in the setting of acute thrombosis. Therefore, these levels should generally not be assessed at the time of presentation with acute VTE. However, a normal protein C activity in this setting essentially rules out hereditary protein C deficiency.

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