Chameleon™ COLOREX™ STEC is a selective and differential, chromogenic culture medium used for the qualitative direct detection and presumptive identification of Shiga-Toxin Producing Escherichia coli (STEC). Test specimens include rectal swab and stools. It can also be used in the detection of STEC in the analyses of food products for human consumption, animal feed and in environmental samples. Further identification, susceptibility testing, and epidemiological typing should be performed on suspect colonies. Media can also be used in the detection of STEC in the analyses of food products for human consumption, animal feed and in environmental samples. • Product meets CLSI performance criteria.• Chameleon™ COLOREX™ STEC should be used by trained professionals within a laboratory setting. • For in vitro diagnostic (IVD) use.• Product is not intended for use in the diagnosis or treatment of disease or other human conditions.