E. coli
Most frequent cause of UTIs; uncomplicated community-acquired
Enterobacteriaceae = facultative anaerobes; glucose fermenters; nitrate and catalase positive; oxidase negative
Flat dry pink/red with surrounding darker pink areas on MAC; shiny, opaque, off-white BH on BAP
Translucent pink to mauve on CHROMagar with spot indole positive to confirm
TSI: A/A and H2S negative
Urease negative














