Table 1

 Results of anticardiolipin antibody and anti-β2 glycoprotein 1 antibody assays in the two patients

Anticardiolipin antibody (U/ml)Anti-β2 glycoprotein 1
IgG [NR 0–12]IgM [NR 0–10]IgA [NR 0–13]
NR, normal range.
Case 1<12<1044Negative
Case 2<12<1018Borderline positive