TABLE 6.

Sensitivity and specificity of C. trachomatis diagnostic tests

Specimen group (n)	Test	Sensitivity (%)	95% CI	Specificity (%)	95% CI
Tested by 4 techniques (396)	ELISA	21/50 (42.0)	28.2–56.8	346/346 (100)	98.9–100
	PCR	49/50 (98.0)	89.4–99.9	339/346 (98.0)	95.9–99.2
	SDA	47/50 (94.0)	83.5–98.6	346/346 (100)	98.9–100
	LCR	45/50 (90.0)	78.2–96.7	341/346 (98.6)	96.7–99.5
Tested by 3 techniques (337)	ELISA	8/24 (33.3)	15.6–55.3	312/313 (99.7)	98.2–100
	PCR	24/24 (100)	85.8–100	306/313 (97.8)	95.4–99.1
	SDA	24/24 (100)	85.8–100	313/313 (100)	98.8–100