Ten samples containing various amounts of methicillin-resistant Staphylococcus aureus (MRSA), methicillin-susceptible S. aureus, methicillin-resistant Staphylococcus epidermidis (MRSE), and combinations thereof were distributed to 51 laboratories for molecular diagnostics testing. Samples containing 10(2) to 10(3) MRSA cells were frequently reported to be negative. MRSE samples were scored as negative by all commercial tests but by only two out of three in-house tests.

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doi.org/10.1128/JCM.00759-07, hdl.handle.net/1765/17739
Staphylococcus aureus: Resources
Erasmus MC: University Medical Center Rotterdam

van Belkum, A., Niesters, B., MacKay, W., & van Leeuwen, W. (2007). Quality control of direct molecular diagnostics for methicillin-resistant Staphylococcus aureus. Staphylococcus aureus: Resources. doi:10.1128/JCM.00759-07