TABLE 5.

Comparison between the four peptides for specificity

PanelNo. of serum samplesNo. of positive samples (%)a
B31-25IP90-25B31-17IP90-17
Rheumatoid arthritis340 (0)2 (5.8)1 (2.9)3 (8.8)
Syphilis272 (7.4)1 (3.7)1 (3.7)3 (11.1)
Systemic lupus erythematosus201 (5)0 (0)1 (5)3 (15)
Healthy502 (4)3 (6)3 (6)4 (8)
Total1315 (3.8)*6 (4.6)6 (4.6)†13 (9.9)*†
  • a *, OR = 2.766; †, OR = 2.288.