Stain
Enterobacterales
Stool Pathogens
Disk Diffusion
Nonfermenters
100

Safranin is a key component of which stain

Gram stain

100

#1 cause of UTI's 

Escherichia coli

100

Hydrogen Sulfide producer on HE/XLD. More than 2,500 serotypes

Salmonella species

100

Aids in the identification of Streptococcus pyogenes

A disk/Bacitracin  

100

Swimmers Ear

Pseudomonas aeruginosa
200

These nonbacterial cells should stain pink on gram stain 

White blood cells,  epithelial cells

200

Nonlactose fermenter, swarming

Proteus

200

Capnophilic, 42oC, Seagull shaped gram stain

Campylobacter

200

Aids in the identification of Staphylococcus saprophyticus  

Novobiocin

200

Pigment(s) in Pseudomonas species

Pyocyanin, pyoveridin, pyomelanin 

300

These bacteria commonly over-decolorize

GPB

300

Preferred growth conditions

facultative anaerobes

300

Rice water stools

Vibrio cholera
300

P Disk is used for 

Streptococcus pneumoniae

300

Important nosocomial pathogen, associated with ventilators, gncb

Acinetobacter baumannii

400

parasitic stain, oil magnification

Trichrome

400

Lactose fermenter, mucoid, indole +

Klebsiella oxytoca

400
Colorless on MAC, HE, XLD and 

Indole -

Shigella

400

Disk diffusion antibiotic testing

Kirby Bauer

400

Important pathogen in cystic fibrosis patients, historically removing patients from lung transplant list

Burkholderia cepacia 
500

Lactophenol cotton blue use

Mold

500

Member of this family that is oxidase positive

Pleisomonas

500

Non-sorbitol fermenter on SMAC

Escherichia coli, 0157:H7

500
Used to predict the Penicillin and Cephalosporin susceptibility

Beta lactamase/Cefinase

500

Water dwelling bug associated with deep tissue wounds and gastroenteritis

Aeromonas

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