Selective and differential chromogenic medium for the qualitative detection of gastrointestinal colonization of vancomycin-resistant Enterococcus faecium (VREfm) and vancomycin-resistant Enterococcus faecalis (VREfs).

VRESelect plates may be read within 24 to 28 hours incubation:

• Pink colonies can be reported as VREfm;
• Blue colonies should be confirmed by a direct catalase test. Catalase negative colonies can be reported as VREfs. Vancomycin susceptibility testing may be performed directly from VRESelect medium.
• Enterococcus gallinarum and Enterococcus casseliflavus, intrinsically resistant to vancomycin, when they are not inhibited, do not metabolize the chromogenic substrates and appear as colorless or white colonies.
• Vancomycin-susceptible enterococci are inhibited.

Principle

VRESelect is a selective chromogenic medium, based on the presence of an antifungal/antibiotic mixture that inhibits the growth of the majority of yeasts, Gram negative and Gram positive bacteria, with the exception of Vancomycin Resistant Enterococci (VRE). Identification is based on the cleavage of chromogenic substrates by specific enzymatic activities of Enterococcus faecium which produces pink colonies and Enterococcus faecalis which produces blue colonies.

Intended Use

VRESelect is a selective and differential chromogenic agar medium for the qualitative detection of gastrointestinal colonization of vancomycin-resistant Enterococcus faecium (VREfm) and vancomycin-resistant Enterococcus faecalis (VREfs) and to aid in the prevention and control of VRE in healthcare settings. The test is performed on rectal swabs or fecal specimens from patients or Healthcare workers to screen for VRE colonization.

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(停产) VRESelect Medium

63751

Selective and differential chromogenic medium for the qualitative detection of gastrointestinal colonization of vancomycin-resistant E. faecium and faecalis (20 plates of 90 mm)