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Intraassay and interassay variabilities of the tested methods
| Microorganism | Polyethylene discs | Titanium | ||
|---|---|---|---|---|
| Interassays CV% | Intraassays CV% | Interassays CV% | Intraassays CV% | |
| S aureus | ||||
| Scraping | 4.9 | 1.5 | 3.5 | 1.8 |
| Sonication | 2.8 | 0.8 | 3.5 | 0.5 |
| DTT | 2.8 | 0.4 | 3.3 | 0.8 |
| NAC | 7.4 | 1.8 | 6.8 | 2.6 |
| P aeruginosa | ||||
| Scraping | 3.0 | 0.7 | 5.2 | 1.3 |
| Sonication | 1.9 | 0.7 | 1.6 | 0.3 |
| DTT | 2.5 | 0.6 | 2.1 | 0.9 |
| NAC | 4.7 | 1.2 | 5.0 | 4.9 |
CV = coefficient of variation; DTT = dithiothreitol; NAC = N-acetylcysteine.
