Introduction
Savyon Diagnostics Chromagenic UTI Agar is an agar medium in a Petri dish that allows the isolation and counting of all urinary tract organisms using a standard bacteriological loop plating method.
Direct identification via demonstration of enzyme activities of the bacteria most often responsible for urinary tract infections, namely Escherichia coli, Proteus, and group D streptococci.
Orientation for the diagnosis of the other urinary pathogens, in particular K. E. S. group enterobacterial (Klebsiella, Enterobacter, Serratia) can be interpret by color
Interpretation
- E. coli can be identified based on demonstration of the activity of two enzymes, ß-glucuronidase and tryptophanase; ß-glucuronidase cleaves the first chromogenic substrate contained in the medium, causing the colonies to turn purple.
- Proteus are characterized by tryptophan deaminase activity Proteus mirabilis is indole-negative.
- Group D streptococci produce a ß-glucosidase (esculinase) which cleaves the second chromogenic substrate contained in the medium causing the colonies to turn blue.
Cat# BP-015
