Table 2.

IgG reactivity against different oxidized phospholipids in subjects investigated for the presence of lupus anti-coagulant (LA) activity by activated partial thromboplastin time (aPTT-FSL) and diluted Russell's viper venom test plus phospholipid supplementation (dRVVT-PL) tests.

	Negative to both aPTT-FSL and dRVVT-PL (n = 85)	Positive to aPTT-FSL and/or dRVVT-PL (n = 79)	Statistical significance
Ox-CL	0·141 ± 0·092	0·213 ± 0·328	n.s.
Ox-PS	0·074 ± 0·061	0·206 ± 0·384	P < 0·0005
Ox-PE	0·208 ± 0·101	0·328 ± 0·249	P < 0·0005
Ox-PC	0·105 ± 0·033	0·128 ± 0·054	P = 0·0005
Ox-PI	0·055 ± 0·058	0·103 ± 0·116	P < 0·0005

The values are expressed as optical density at 490 nm after subtracting the background reactivity of each sera in the wells treated with the solvent alone. All the sera were evaluated in duplicate. oxPS: oxidized phosphatidylserine; oxPC: phosphatidylcholine; oxPE: phosphatidylethanolamine; oxPI: phosphatidylinositol.