Semin Thromb Hemost
DOI: 10.1055/s-0037-1601331
Review Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA

Laboratory Diagnostics of Antiphospholipid Syndrome

Vittorio Pengo1, Elisa Bison1, Gentian Denas1, Seena Padayattil Jose1, Giacomo Zoppellaro1, Alessandra Banzato1
  • 1Department of Cardiac Thoracic and Vascular Sciences, Clinical Cardiology, Thrombosis Centre, University of Padova, Padova, Italy
Further Information

Publication History

Publication Date:
03 May 2017 (eFirst)

Abstract

Diagnosis of antiphospholipid syndrome (APS) lies in the recognition of antiphospholipid antibodies (aPL). As standardization of tests for the detection of aPL is far from being optimal and reference material is not available, inappropriate diagnoses of APS are not unusual. In the last few years, the concept of triple test positivity has emerged as a useful tool to identify patients with APS. Clinical studies on patients and carriers of triple positivity clearly show that these individuals are at high risk of thromboembolic events and pregnancy loss. Moreover, triple positivity arises from a single (probably pathogenic) antibody directed to domain 1 of β2-glycoprotein I, a protein whose function is still unknown. Studies on homogenous group of patients with single or double positivity are scant, and uncertainties arise on their association with clinical events. Promising but undetermined results come also from the determination of antibodies directed to phosphatidylserine/prothrombin complex. Interpretation of laboratory profile in APS is challenging, and the collaboration between clinical pathologists and clinicians is highly desirable.