Detection of Antiphosphatidylserine/Prothrombin Antibodies and Their Potential Diagnostic Value

Table 4

Association of aPS/PT avidity with clinical features of autoimmune patients.

aPS/PT avidity	Low; (𝑛=9)	Heterogeneous; (𝑛=33)	High; (𝑛=9)
APS	7 (77%)	32 (97%)	9 (100%)
SLE	2	1	0
RA	0	0	0
SS	0	0	0
Thrombosis	8	26	8
Arterial	3	11	4
Venous	5	10	5
Obstetric disorder	1	14	4
aPS/PT positivity
In-house IgG aPS/PT	9	33	9
QUANTA Lite IgG aPS/PT	4	29	8
QUANTA Lite LAC	7	32	9

APS: antiphospholipid syndrome, SLE: systemic lupus erythematosus, RA: rheumatoid arthritis, SS: Sjögren’s syndrome, and aPS/PT: anti-phosphatidylserine/prothrombin antibodies.