TABLE 3.

Monomicrobial positive blood cultures: gram-negative organismsa

Conventional IDNo. of specimensProbe matrix ID
Escherichia coli39E. coli
Pseudomonas aeruginosa10P. aeruginosa
Citrobacter freundii1Enterobacteriaceae, not E. coli
Enterobacter aerogenes3Enterobacteriaceae, not E. coli
Enterobacter cloacae2Enterobacteriaceae, not E. coli
Flexispira sp2Enterobacteriaceae, not E. coli
Klebsiella oxytoca1Enterobacteriaceae, not E. coli
Klebsiella pneumoniae9Enterobacteriaceae, not E. coli
Salmonella typhi1Enterobacteriaceae, not E. coli
Serratia marcescens2Enterobacteriaceae, not E. coli
Achromobacter xylosoxidans1Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Acinetobacter lwoffii2Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Agrobacterium radiobacter1Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Bacteroides fragilis4Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Pasteurella multocida1Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Pseudomonas putida1Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
Stenotrophomonas maltophilia4Gram-negative, not Enterobacteriaceae, Campylobacter, or P. aeruginosa
  • a There were no discrepancies between conventional and probe matrix IDs for gram-negative organisms.