Anti-Cardiolipin is an indirect solid phase enzyme immunoassay ( ELISA ) for the quantitative measurement of IgG and IgM class autoantibodies against cardiolipin in human serum or plasma. The assay is intended for in vitro diagnostic use only as an aid in the diagnosis of an increased risk of thrombosis in patients with Systemic Lupus Erythematosus ( SLE ) or lupus-like disorders.