APS is a multi-system thrombophilic disorder characterised by thrombosis in the vascular system, a history of pregnancy loss and other obstetric complications. It may occur as a primary disease or in the presence of other autoimmune diseases, particularly SLE.
Common manifestations of the disease in patients can be stroke, large vessel occlusion, levido reticularis and thrombocytopenia. Other more rare manifestions include chorea, Addison’s and acute encephalopathy.
The most common tests to diagnose APS detect lupus anticoagulant (LA) using clotting assays as well as antibodies against cardiolipin and β2-glycoprotein 1 using EIAs.
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