Table 3.

Isolates detected by SeptiFast plus blood culture or by only one testa

Species group and speciesTotal no. of positive blood samples (% of all positive blood samples)No. of samplesConcordance (%)No. of samples with:
SeptiFast positive/blood culture positiveSeptiFast positive/blood culture negativeSeptiFast negative/blood culture positiveSeptiFast contaminantsBlood culture contaminants
Gram-positive bacteria (128 pathogens and 108 contaminants)
    Bacillus spp.b000002
    Corynebacterium spp.b000002
    Clostridium spp.b1 (0.4)00100
    Enterococcus faecalis8 (3.0)70187.512
    Enterococcus faecium4 (1.5)12125.011
    Micrococcus spp.b000001
    Staphylococcus aureus31 (11.6)238074.253
    CoNS79 (29.6)4823860.8676
    Streptococcus pneumoniae2 (0.7)10150.010
    Streptococci other than S. pneumoniae3 (1.1)11133.316
Gram-negative bacteria (107 pathogens and 35 contaminants)
    Abiotrophia defectiveb1 (0.4)00100
    Acinetobacter baumannii0000002
    Citrobacter spp.b1 (0.4)00102
    Enterobacter aerogenes/E. cloacae12 (4.5)75058.333
    Escherichia coli6 (2.2)51083.335
    Klebsiella pneumoniae/K. oxytoca27 (10.1)1214144.461
    Burkholderia cepaciab1 (0.4)00100
    Proteus mirabilis2 (0.7)11050.000
    Pseudomonas aeruginosa44 (16.5)1824241.060
    Pseudomonas oryzihabitansb1 (0.4)00100
    Salmonella spp.b1 (0.4)00100
    Serratia marcescens7 (2.6)42157.130
    Stenotrophomonas maltophilia4 (1.5)22050.001
Fungi (32 pathogens and 4 contaminants)
    Candida albicans12 (4.5)46233.311
    Candida famatab1 (0.4)00100
    Candida krusei4 (1.5)21150.000
    Candida parapsilosis13 (4.9)67046.202
    Candida tropicalis1 (0.4)10010000
    Geotrichum capitatumb1 (0.4)00100
  • a The total number of isolates tested was 414, which included 267 pathogens and 147 contaminants.

  • b Microorganisms not in SML.