ACLY and syphilis: Immunological studies were as follows: positive LA; aCL-IgG, 55 U/mL (normal <15); aCL-IgM, 19.6 U/mL (normal <15); anti-dsDNA, 394 IU/mL; C3, 48.8 mg/dL (normal 90–180); C4, 16.8 mg/dL (normal 10–40), and the serological test for syphilis was negative.