TABLE 1.
Comparison of the Bruker Biotyper MALDI TOF MS system with molecular methods in identifying 286 blood isolates of Acinetobacter calcoaceticus-Acinetobacter baumannii complex
| Acinetobacter species identification with identical results by molecular methods (no. of isolates) | Acinetobacter species identified by Bruker Biotyper system (no. of isolates) | No. (%) of isolates with the following range of scores by the Bruker Biotyper system: |
||
|---|---|---|---|---|
| ≥2.0 | 1.7–1.999 | <1.7 | ||
| A. baumannii (144) | A. baumannii (142) | 142 (100) | 0 (0) | 0 (0) |
| A. nosocomialis (2) | 2 (100) | 0 (0) | 0 (0) | |
| A. nosocomialis (87) | A. nosocomialis (63) | 62 (98.4) | 1 (1.6) | 0 (0) |
| A. baumannii (22) | 17 (77.3) | 5 (22.7) | 0 (0) | |
| A. pittii (2) | 0 (0) | 2 (100) | 0 (0) | |
| A. pittii (42) | A. pittii (41) | 40 (97.6) | 1 (2.4) | 0 (0) |
| A. nosocomialis (1) | 1 (100) | 0 (0) | 0 (0) | |
| Acinetobacter genospecies “close to 13TU” (13)a | A. baumannii (12) | 10 (83.3) | 2 (16.7) | 0 (0) |
| A. pittii (1) | 1 (100) | 0 (0) | 0 (0) | |
a
Not included in Bruker Biotyper database (DB 5627).