TABLE 6.

Best results obtained for the different anti-Chlamydia antibody assays

Assay	Sensitivity (%)	Specificity (%)	Predictive value (+) (%)	Predictive value (−) (%)	False-positive rate (%)	False-negative rate (%)
IgG anti-C. trachomatis (blot) (≥10 bands)a	79	84	69	90	16	21
IgM anti-C. trachomatis (blot) (≥2 bands)a	50	94	78	81	6	50
IgA anti-C. trachomatis (blot) (≥6 bands)a	71	87	71	87	13	29
IgG anti-C. trachomatis (blot) (≥10 bands) +
IgM anti-C. trachomatis (blot) (≥2 bands)a	86	81	67	93	19	14
IgA anti-C. trachomatis (blot) (≥6 bands) +
IgM anti-C. trachomatis (blot) (≥2 bands)a	79	81	65	89	19	21
IgG anti-LPSb	84	48	70	68	52	16
IgG anti-MOMPb	58	68	72	53	32	42
IgG anti-hsp60c	62	80	82	59	20	38
IgG anti-pgp3c	53	80	80	53	20	47
IgG anti-MOMP + pgp3c	71	67	76	61	33	29
IgG anti-hsp60 + pgp3c	76	77	83	68	23	24
IgG anti-C. trachomatis (MIF test)d	44	89	85	55	11	56

^aPositive patients were 14 patients with C. trachomatis urogenital infection, and negative individuals were 31 healthy blood donors. 

^bPositive patients were 45 patients with C. trachomatis urogenital infection, and negative individuals were 31 healthy blood donors. 

^cPositive patients were 45 patients with C. trachomatis urogenital infection, and negative individuals were 30 healthy blood donors. 

^dPositive patients were 25 patients with C. trachomatis urogenital infection, and negative individuals were 19 healthy blood donors.