TABLE 2.
Test | No. of true-positive specimens for which:
|
No. of specimens for which positive PCR was not confirmableb | ||
---|---|---|---|---|
Positive PCR was confirmed by other culture-positive samples from same patient | Positive PCR was confirmed by other PCR | Negative PCR was confirmed by both PCRsa | ||
CA | 15 | 2 | 4 | |
In-house PCR | 31 | 2 | 2 | |
Acid-fast staining | 1 |
Smear-negative, culture-negative specimen from a patient with culture-proven TB.
False-positive PCR.