CHROMOGENIC UTI AGAR

Chromogenic UTI Agar is a chromogenic culture medium for identification and confirmation of microorganisms related to urinary tract infections. The colony characteristic colours, due to specific enzymatic reactions, allow the differentiation of main uropathogens, facilitating the recognition of mixed cultures and supporting a reliable microbial identification.
The peptone special in the medium provides nitrogenous and carbonaceous compounds and other nutrients, which are required for microbial growth. It contains two chromogenic substrates which are hydrolyzed by enzymes produced by Enterococcus species, Escherichia coli and other coliforms. Enterococci produces blue colonies in the presence of beta-glucosidase activity and E. coli produces pink colonies in the presence of beta-D-galactosidase activity.
Coliforms generate purple colonies when both chromogenic substrates are cleaved. The inclusion of phenylalanine and tryptophan enables detection of tryptophan deaminase activity, producing brown colonies characteristic of Proteus, Morganella, and Providencia species.
The characteristic colour reactions allow clear visual differentiation of the common urinary pathogens directly on the surface of the agar. Indole test can be used further to confirm E. coli identification, which supports accurate interpretation of characteristic colony reactions during routine microbiological examination.

Enables rapid identification and differentiation of common uropathogens through characteristic colony colours produced by specific enzymatic reactions.