An alkaline urine sample is a possible sign of<unk> . It can be diagnosed in the lab due to characteristic swarming motility, and inability to metabolize lactose (on a MacConkey agar plate, for example). Also<unk>  produces a very distinct fishy odor.
Proteus mirabilis
Escherichia coli
Citrobacter koseri
Enterobacter cloacae
Klebsiella oxytoca
Enteroinvasive Escherichia coli
Enteroaggregative Escherichia coli
Pseudomonas aeruginosa