Fig. 5

Impact of acid formic extraction step and performances of our rapid diagnosis strategy. a Percentage of reliable and unreliable bacterial identification with either the Rapid Sepsityper® (RS) or the Rapid Sepsityper® with formic acid extraction step (RS + FA) protocols for all monomicrobial and polymicrobial positive blood cultures (Total bacteria), monomicrobial positive blood cultures with Gram positive (Gram +) and monomicrobial positive blood cultures with Gram negative bacteria (Gram −). (N: number of samples tested; ns: no statistically significant difference; *: p < 0.05). b Percentage of reliable and unreliable bacterial identification obtained with the rapid diagnosis strategy (Rapid Sepsityper® with and without formic acid protocols: RS ± FA) or after Standard Sepsityper® (SS) completion (for samples unidentified with the rapid protocol) for all monomicrobial and polymicrobial positive blood cultures (Total), for monomicrobial positive blood cultures with Gram positive bacteria (Gram +), for monomicrobial positive blood cultures with Gram negative bacteria (Gram −) and for polymicrobial positive blood cultures (PM)