TABLE 3.
MALDI Biotyper 2.0 identification results summarized for 45 blind-coded Francisella strains on different taxonomic levelsb
| Species | Subspecies | Correct IDa | Log score value |
||
|---|---|---|---|---|---|
| Reference | Highest | Lowest | |||
| F. tularensis | tularensis | 6/6 | 2.95 | 2.89 | 2.29 |
| holarctica | 27/27 | 2.94 | 2.74 | 2.03 | |
| mediasiatica | 3/3 | 2.94 | 2.73 | 2.33 | |
| novicida | 4/4 | 2.94 | 2.64 | 2.23 | |
| F. philomiragia | 5/5 | 2.94 | 2.69 | 2.24 | |
a
Proportion of correct identifications of MALDI-TOF MS spectra by matching against the reference database.
b
The log score values for the five reference strains (reference) matched against themselves as well as the highest and lowest log scores for matches of the blind-coded strains sorted by species and subspecies are shown. The maximum log score achievable is 3.0. Log score values of ≥2.0 are rated as a correct identification of strain on species or subspecies level.