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HardyCHROM CRE

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Hardy Diagnostics is proud to introduce HardyCHROM CRE for the screening of E. coli, K. pneumoniae,
K. aerogenes, K. oxytoca, Enterobacter cloacae complex, and Serratia marcescens.

HardyCHROM™ CRE is a selective and differential chromogenic agar medium intended for the qualitative and presumptive detection from stool specimens of Escherichia coli that are non-susceptible to carbapenems as pink colonies and KES (Klebsiella aerogenes, Klebsiella oxytoca, Klebsiella pneumoniae, Enterobacter cloacae complex, and Serratia marcescens) that are non-susceptible to carbapenems as blue colonies.

HardyCHROM™ CRE is intended as an aid in the detection, identification of colonization and control of these bacteria in a healthcare setting. HardyCHROM™ CRE is not intended to diagnose infection or guide therapy. Results can be interpreted after incubation for 18-24 hours. Subculture to non-selective medium is required for confirming identification, antimicrobial susceptibility testing and epidemiological typing.

A lack of growth or the absence of pink or blue colonies on HardyCHROM™ CRE does not preclude the presence of Escherichia coli and KES that are non-susceptible to carbapenems.

Growth Interpretation

  • Non-susceptible E. coli produces colonies that are rose to magenta in color with darker pink centers.

  • Klebsiella, Enterobacter, and Serratia spp. produce large, dark blue colonies (with or without a pink halo), are presumptive positive for carbapenem non-susceptible KES (Klebsiella aerogenes, Klebsiella oxytoca, Klebsiella pneumoniae, Enterobacter cloacae complex, and Serratia marcescens).

  • Colonies that are not pink to magenta, blue, or blue with pink halos are negative – No carbapenem non-susceptible Escherchia coli or KES detected.
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HardyCHROM CRE
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Elevate your testing for carbapenemase producing Enterobacterales and Pseudomonas aeruginosa with NG-Test® CARBA 5

Rapid detection and differentiation of the five most common carbapenemases produced by Enterobacteriaceae and Pseudomonas aeruginosa resistance mechanisms.

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NG-Test® CARBA 5 is a lateral flow assay for quick, clear detection of the “big 5” carbapenemase enzymes produced by Enterobacteriaceae and P. aeruginosa. NG-Test® CARBA 5 is the rapid test you’ve been waiting for:
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