ISSN: 2161-0681

Journal of Clinical & Experimental Pathology
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The new trend in laboratory assay of NOACs

15th Global Experts Meeting on Pathology and Laboratory Medicine

Sin Chun Fung

University of Hong Kong, China

ScientificTracks Abstracts: J Clin Exp Pathol

DOI: 10.4172/2161-0681-C2-048

Abstract
New Oral Anti-Coagulants (NOACs) are getting more and more popular now and vast majority of patients are taking NOACs as thrombo-prophylaxis now. The merits of NOACs include wide therapeutic index and stable pharmacokinetics and hence there is no need for laboratory monitoring. However, there are some clinical situations that laboratory monitoring of NOACs is important for patient�s management; for example, patients undergoing invasive procedures or patients suffering from bleeding complications. Various platforms of laboratory assay are available for measuring the drug level of dabigatran, rivaroxaban and apixaban. The measurement of rivaroxaban and apixaban can be done by anti-Xa assay and dilute thrombin time can be used to measure the level of dabigatran. Some review articles mentioned that the value of specific assay of NOACs is uncertain, mainly because the precision and accuracy of the specific assay is not optimal, especially for low drug level. Nowadays, some companies provide kit with low-level calibrators to improve precision of measurement of low drug level. In our study, we use the anti-Xa kits and dilute thrombin time kits from Werfen Company and Sysmex Company for evaluating the drug assay of dabigatran and rivaroxaban. The precision, accuracy, linearity and limit of detection are satisfactory for measuring various levels of dabigatran and rivaroxaban, including low drug concentrations and the performance of the kits provided by two companies are comparable. The relationship between the drug levels of NOACs with routine coagulation screening tests was also evaluated. The issue of quality control and some practical issues for implementation of the specific laboratory assay of NOACs will also be discussed.
Biography

Sin Chun Fung has obtained his Medical degree in 2008 and is a qualified Hematopathologist in Hong Kong. Currently he is working as a Clinical Assistant Professor in University of Hong Kong. He had been working as Physician in the past. He is interested in the work and research in various hematological malignancies and investigating the novel treatments. He is also passionate in the field of coagulating and hemostasis. With his experience and expertise in internal medicine, he had done work on the laboratory assay of new oral anti-coagulants, with the aim of improving the management of patients taking NOACs.

E-mail: scf185@pathology.hku.hk

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