Table 3. MALDI-TOF MS identification rate in 67 isolates that grew in all 4 anaerobic blood culture bottles.
| MALDI-TOF MS Score | BacT/ALERT n (%) | BACTEC n (%) | ||
|---|---|---|---|---|
| FN | FN Plus | Plus | Lytic | |
| >2 * | 38 (57%) | 36 (54%) | 43 (64%) | 34 (51%) |
| 1.9–1.7 * | 13 (19%) | 15 (22%) | 9 (13%) | 14 21%) |
| 1.69–1.4 ** | 1 (2%) | 2 (3%) | ||
| ID | 51 (76%) | 51 (76%) | 53 (79%) | 50 (75%) |
| No ID | 16 (24%) | 16 (24%) | 14 (21%) | 17 25%) |
* The scores 1.7-1-9 and >2 were considered as species level identification.
** Scores ranging between ≥1.4 and ≤1.7 were considered reliable for genus identification if the first three matched patterns were the same.