TABLE 4.
Comparison of BD GeneOhm MRSA PCR using swabs extracted in 300 μl of achromopeptidase to MRSASelect culturea
| PCR result | No. of specimens with culture result
|
Total no. of specimens | |
|---|---|---|---|
| Positive | Negative | ||
| Positive | 21 | 3 | 24 |
| Negative | 2 | 298 | 300 |
| Total | 23 | 301 | 324 |
a
The following determinations for PCR used MRSASelect as the reference assay: sensitivity, 21/23(91%); specificity, 298/301 (99%); positive predictive value, 21/24 (88%); and negative predictive value, 298/300 (99%). The three samples that remained PCR inhibited after the freeze-thaw were excluded from this analysis.