TABLE 4.
Performance characteristics of EIA and PACE 2, LCx, and AMP CT assays for detection of C. trachomatis
| Specimen and assay | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|
| Endocervical swabs | ||||
| Clearview EIA | 50 (5/10)a | 100 (55/55) | 100 (5/5) | 91.7 (55/60) |
| Gen-Probe PACE 2 | 80.6 (50/62) | 99.9 (675/676) | 98.0 (50/51) | 98.3 (675/687) |
| Abbott LCx | 96.8 (60/62) | 99.9 (675/676) | 98.4 (60/61) | 99.7 (675/677) |
| Gen-Probe AMP CT | 100 (62/62) | 99.9 (675/676) | 98.4 (62/63) | 100 (677/677) |
| Urine | ||||
| Abbot LCx | 98.4 (61/62) | 100 (685/685) | 100 (61/61) | 99.9 (685/686) |
| Gen-Probe AMP T | 80.6 (50/62) | 100 (685/685) | 100 (50/50) | 98.2 (685/697) |
a
Values in parentheses are number of specimens positive by the assay/total number of specimens tested.