Partial Thromboplastin Time: What Affects The Test


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What Affects the Test


Reasons you may not be able to have the test or why the results may not be helpful include:

  • Taking some herbal products or natural remedies.
  • Taking some medicines, such as antihistamines.


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Last updated: September 15, 2008
Author: Robin Parks, MS
Reviewed By: Anne C. Poinier, MD - Internal Medicine, Brian Leber, MDCM, FRCPC - Hematology
Editors: Maria Essig, Tracy Landauer

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