Table 3: Association between the presence of antiphospholipid antibodies and LA activity.

AntibodyLupus anticoagulant activity
valueOdds ratio (95% Cl)

aCLIgG<0.0015.0 (2.4–10.6)
IgM<0.0014.6 (1.6–13.7)
Anti- GPIIgG<0.0019.0 (4.2–19.4)
IgM<0.0011.2 (1.0–1.4)
In-house aPS/PTIgG<0.00121.6 (8.1–57.7)
IgM<0.00112.9 (5.4–30.6)
QUANTA Lite aPS/PTIgG<0.00115.3 (5.8–40.5)
IgM<0.00113.2 (5.6–30.8)
LAC<0.00110.2 (4.4–23.6)

aCL: anticardiolipin, anti- GPI: anti- glycoprotein, and aPS/PT: antiphosphatidylserine/prothrombin.