Comprehensive review of the impact of direct oral anticoagulants on thrombophilia diagnostic tests: Practical recommendations for the laboratory

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Résumé

There is a laboratory and clinical need to know the impact of direct oral anticoagulants (DOACs) on diagnostic tests to avoid misinterpretation of results. Although the regulatory labelling documents provide some information about the influences of each DOAC on diagnostic tests, these are usually limited to some of the most common tests and no head to head comparison is available. In this paper, we report the impact of DOACs on several thrombophilia tests, including assessment of antithrombin, protein S and protein C activity assays, detection of activated protein C resistance and assays used for lupus anticoagulant. Results are compared and discussed with data obtained from literature. The final goal of this comprehensive review is to provide practical recommendations for laboratories to avoid misdiagnosis due to oral direct factor Xa (FXa) or IIa (FIIa) inhibitors. Overall, oral direct FXa (apixaban, betrixaban, edoxaban and rivaroxaban) and FIIa (dabigatran) antagonists may affect clot‐based thrombophilia diagnostic tests resulting in false‐positive or false‐negative results. An effect on FIIa‐based thrombophilia diagnostic tests is observed with dabigatran but not with anti‐FXa DOACs and conversely for FXa‐based thrombophilia diagnostic tests. No impact was observed with antigenic/chromogenic methods for the assessment of protein S and C activity. In conclusion, interpretation of thrombophilia diagnostic tests results should be done with caution in patients on DOACs. The use of a device/chemical compound able to remove or antagonize the effect of DOACs or the development of new diagnostic tests insensitive to DOACs should be considered to minimize the risk of false results.
langue originaleAnglais
journalInternational Journal of Laboratory Hematology
Date de mise en ligne précoce18 sept. 2020
Les DOIs
Etat de la publicationPublié - 18 sept. 2020

mots-clés

  • Apixaban
  • Betrixaban
  • Dabigatran
  • Edoxaban
  • Rivaroxaban
  • Thrombophilia

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