TABLE 1.

Sensitivity and specificity for MagNA Pure LC robot processing compared to processing by Amplicor method for PCR testing for C. trachomatis and N. gonorrhoeae in urine and cervical swabs

Sample and organism (n)aMagNA pure resultNo. of samples with Amplicor test resultb% Sensitivity% Specificity
PositiveNegative
Urine CT (202)+255*89.397.1
3169
Urine NG (195)+333**97.198.1
1158
Swab CT (601)+462***97.999.6
1552
Swab NG (221)+61****85.799.5
1213
  • a Sample type and organism tested for. n, no. of samples tested. CT, C. trachomatis; NG, N. gonorrhoeae.

  • b *, three of the five samples were positive by LCX testing for CT. **, one of the three samples was positive for NG by LCX. ***, one of the two samples was CT positive by LCX. ****, this specimen was positive for NG by LCX.