Table 1.
Frequency of bacteria samples identified by VITEK 2, Phoenix, MALDI-MS and MALDI-BD according to identification score
| Characteristic | n |
|---|---|
| VITEK 2—Quality of identification | |
| Excellent | 14 |
| Very good | 4 |
| Good | 2 |
| Low discrimination | 2 |
| MALDI-MS—Identification score | |
| Reliable genus and probable species (99.9% to 90%) | 7 |
| Identification of probable genus (89.9% to 85%) | 3 |
| Unreliable identification (<85%) | 6 |
| Not identified | 6 |
| MALDI-BD—Identification score II | |
| Highly probable species | 3 |
| Secure genus and probable species identification | 10 |
| Probable genus | 6 |
| Unreliable | 3 |
| Phoenix—Quality of identification | |
| 100% to 96% | 20 |
| 95% to 93% | 1 |
| 92% to 90% | 1 |
| Total | 22 |
MALDI-BD, MALDI-TOF BioTyper (Becton Dickinson (BD), San Diego, CA, USA); MALDI-MS, MALDI-TOF VITEK MS (bioMérieux, Marcy l’Étoile, France); MALDI-TOF, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry; Phoenix (BD); VITEK 2, VITEK 2 automated phenotypic method (bioMérieux).