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Practice Guideline
. 2024 Mar;22(3):860-868.
doi: 10.1016/j.jtha.2023.11.019. Epub 2023 Dec 7.

Diagnostic value of antibody-induced procoagulant platelets in heparin-induced thrombocytopenia: communication from the ISTH SSC Subcommittee on Platelet Immunology

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Practice Guideline

Diagnostic value of antibody-induced procoagulant platelets in heparin-induced thrombocytopenia: communication from the ISTH SSC Subcommittee on Platelet Immunology

Jan Zlamal et al. J Thromb Haemost. 2024 Mar.
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Abstract

Heparin-induced thrombocytopenia (HIT) is an immune-mediated prothrombotic disorder characterized by a drop in platelet count and an increased risk of thromboembolic events. The accurate diagnosis of HIT involves clinical assessment and laboratory testing with well-characterized functional tests. Recent research has shown the potential of investigating procoagulant platelet formation induced by HIT antibodies. To successfully implement these assays in clinical laboratories, careful consideration of technical and preanalytical factors is crucial. In this communication from the SSC Platelet Immunology, we provide a consensus from experts on the use of flow cytometry in HIT diagnosis, highlighting the importance of standardized protocols.

Keywords: blood platelets; diagnostic tests routine; flow cytometry; heparin; platelet activation.

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Conflict of interest statement

Declaration of competing interests J.Z. and T.B. submitted a patent (PCT/E P2022/06214) for the detection of procoagulant platelets as a diagnostic tool for HIT and vaccine-induced thrombotic thrombocytopenia. All other authors have no conflicts of interest to disclose.

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