Fig. 1.

Values of antiphospholipid antibodies as measured by enzyme immunoassays in patients with systemic lupus erythematosus. One hundred and thirty-nine patients with systemic lupus erythematosus were divided into two groups (patients with or without history of thrombosis) and were applied to various antiphospholipid antibody enzyme immunoassays. Values are in arbitrary units determined independently for each enzyme immunoassay. Numbers above indicate P values calculated by Mann-Whitney U-test aPT-A, antiprothrombin antibody measured using high binding plates; aPS/PT, antiphosphatidylserine/prothrombin antibody; aCL, anticardiolipin antibody; aβ2GPI/CL, β2 glycoprotein I-dependent anticardiolipin antibody