Optimal use of MRSASelect and PCR to maximize sensitivity and specificity of MRSA detection

Curr Microbiol. 2013 Jan;66(1):61-3. doi: 10.1007/s00284-012-0241-1. Epub 2012 Oct 5.

Abstract

Suspected colonies of methicillin-resistant Staphylococcus aureus (MRSA) on chromogenic, MRSASelect (BioRad) medium were confirmed using routine microbiological methods, and a multiplex real-time PCR (n = 108). Although the specificity of MRSASelect assessed at 24 h of incubation was much higher than that of 48 h (91.4 vs. 60 %), extending the incubation time to 48 h, along with PCR confirmation, increased the total number of true positive samples by 27.8 %. These results provide a cost effective method for sensitive and specific detection of MRSA.

Publication types

  • Evaluation Study

MeSH terms

  • Bacteriological Techniques / methods*
  • Humans
  • Methicillin-Resistant Staphylococcus aureus / genetics
  • Methicillin-Resistant Staphylococcus aureus / isolation & purification*
  • Molecular Diagnostic Techniques / methods*
  • Sensitivity and Specificity
  • Staphylococcal Infections / diagnosis*
  • Staphylococcal Infections / microbiology*