Laboratory measurement of the non-vitamin K antagonist oral anticoagulants: selecting the optimal assay based on drug, assay availability, and clinical indication

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• 作者：Adam Cuker
• 关键词：Apixaban ; Dabigatran ; Edoxaban ; Measurement ; Monitoring ; Rivaroxaban
• 刊名：Journal of Thrombosis and Thrombolysis
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：41
• 期：2
• 页码：241-247
• 全文大小：367 KB
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• 作者单位：Adam Cuker (1) (2)
  
  1. Department of Medicine and Department of Pathology & Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
  2. Penn Comprehensive Hemophilia and Thrombosis Program, Hospital of the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Cardiology
  Hematology
  
• 出版者：Springer Netherlands
• ISSN：1573-742X

文摘

Although the non-vitamin K antagonist oral anticoagulants (NOACs) do not require routine monitoring, there are special circumstances in which laboratory measurement may be warranted. The objectives of this review are to summarize evidence on the influence of the NOACs on coagulation tests and provide practical guidance to clinicians on measurement and interpretation of coagulation assays in NOAC-treated patients. Selection of an appropriate assay for NOAC measurement depends on the drug, clinical objective, and assay availability. Separate suggestions for assay selection are provided depending on whether specialized assays are available or whether choice is limited to conventional coagulation assays such as the prothrombin time (PT) and activated partial thromboplastin time (APTT). The dilute thrombin time (TT) and ecarin-based assays are able to quantify dabigatran across a broad range of concentrations, but are not widely available. A normal TT excludes clinically relevant levels. A normal APTT probably excludes excess levels of dabigatran, but does not rule out typical on-therapy drug concentrations. The PT is insufficiently sensitive to dabigatran to be useful in most situations. Factor Xa inhibitors may be quantified with an anti-Xa assay calibrated with drug-specific standards. A normal PT probably excludes excess levels of rivaroxaban and edoxaban, but not typical on-therapy levels of these agents. The PT is less sensitive to apixaban. Depending on the sensitivity of the thromboplastin reagent, a normal PT may not exclude excess levels of apixaban. The APTT has inadequate sensitivity to factor Xa inhibitors and is not recommended for their measurement. Keywords Apixaban Dabigatran Edoxaban Measurement Monitoring Rivaroxaban