TABLE 3

Staphylococcus species identification discordant sequencing results for rpoB (all sites combined)

Portrait Staph ID/R BCP resultDiscordant result (n)bBD Phoenix resultrpoB sequencing result
S. aureus in mixed Stapha infection (not S. lugdunensis)FP for mixed (1)S. aureusS. aureus
S. aureus in mixed Staph infection (not S. lugdunensis)FP (1)Staphylococcus epidermidisS. epidermidis
S. aureus in mixed Staph infection (not S. lugdunensis)FP (1)Staphylococcus hominisS. hominis
S. lugdunensis in mixed Staph infection (not S. aureus)FP (1)S. epidermidisS. epidermidis
Staph species other than S. aureus or S. lugdunensisFP (2)Corynebacterium jeikeiumStaphylococcus pettenkoferi
Staph species other than S. aureus or S. lugdunensisFP (1)Rothia mucilaginosaS. epidermidis
Staph species other than S. aureus or S. lugdunensisFP (1)R. mucilaginosa/Streptococcus gordoniiS. hominis/S. epidermidis
Staph species other than S. aureus or S. lugdunensisFN (2)S. aureusS. epidermidis
Staph species other than S. aureus or S. lugdunensisFN (1)S. aureus/S. epidermidis/S. hominisS. epidermidis
NegativeFN (1)S. epidermidisS. epidermidis
NegativeFN (1)S. hominisS. epidermidis
  • a mixed Staph, mixed Staphylococcus spp.

  • b For a total of 13 isolates; FP, false positive; FN, false negative.