TABLE 2.

Performance of COBAS Amplicor CT/NG test for detection of C. trachomatis in ThinPrep Pap test samplesa

Age (yr) of female population (no. of persons)bNo. of PCR resultsSpecimens with inhibition
PositiveNegative
15 (n = 5)14None
16 (n = 13)13None
17 (n = 31)130None
18 (n = 67)67None
19 (n = 76)76None
20 (n = 130)5125None
21 (n = 132)4128None
22 (n = 117)4113None
23 (n = 150)2148None
24 (n = 124)3121None
25 (n = 155)2153None
    Total (n = 1,000)22978None
  • a None of the women tested showed clinical signs of urogenital infection, and cytological results were normal for all specimens.\

  • b C. trachomatis PCR results were positive for 2 of the 116 15- to 18-year-olds tested (prevalence, 1.7%) and for 20 of the 884 19- to 25-year-olds tested (prevalence, 2.3%).