Antiphospholipid syndrome is a rate systemic autoimmune disease characterized by widespread arterial and venous thrombosis, recurrent abortion and thrombocytopenia. Laboratory tests reveal antibodies against phospholipids. These antibodies are detected by functional tests for the lupus anticoagulant, the anticardiolipin ELISA, the anti-b2-glycoprotein 1 ELISA and ELISA tests for antibodies against other cofactors and phospholipids. Pathogenetic mechanisms of thrombosis are poorly understood. Diagnostic assays for detection of antiphospholipid have not been yet adequately standardized.

        Key words: antiphospholipid syndrome, antiphospholipid antibodies, lupus anticoagulant, laboratory detection.