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Table 1 Bacterial species tested for urease activity with the RUT test, read after 1 h incubation at 36 °C

From: Rapid urease test (RUT) for evaluation of urease activity in oral bacteria in vitro and in supragingival dental plaque ex vivo

Bacterial species Origin or strain designationa Urease activityb
Actinomyces naeslundii OMGS 2466 +
Actinomyces naeslundii OMGS 1923 0
Actinomyces oris OMGS 2683 +
Campylobacter gracilis CCUG 27720 +
Campylobacter rectus OMGS 1236 +
Campylobacter ureolyticus CCUG 7319 +++
Enterococcus faecalis ATCC19433 0
Escherichia coli OMGS 3935 0
Fusobacterium nucleatum OMGS 2685 0
Haemophilus parainfluenzae CCUG 12836 T 0
Haemophilus. parainfluenzae OMGS 199/11 ++
Haemophilus parainfluenzae OMGS 202/11 +++
Haemophilus parainfluenzae OMGS 203/11 +++
Helicobacter pylori ATCC 43504 +++
Lactobacillus casei/paracasei OMGS 3184 0
Lactobacillus. salivarius CCUG 55845 0
Lactobacillus fermentum OMGS 3182 +
Porphyromonas gingivalis OMGS 2860 0
Prevotella intermedia OMGS 2514 0
Pseudomonas aeruginosa OMGS 3943 0
Rothia dentocariosa OMGS 1956 0
Streptococcus mitis CCUG 31611 +
Streptococcus mutans OMGS 2482 0
Streptococcus salivarius I OMGS 3944 0
Streptococcus salivarius II OMGS 3945 +
Streptococcus sanguinis OMGS 2478 0
Staphylococcus aureus OMGS 3947 +
Staphylococcus epidermidis OMGS 3949 +++
Tannerella forsythia ATCC43037 0
  1. aATCC and CCUG means reference strains, OMGS means clinical isolates from the department collection
  2. bThe visual color change was graded as no reaction (0) for no color change, + denoted a weak reaction with a shift to pink color, ++ denoted a moderate reaction with a shift towards red and +++ a strong reaction with a clear purple color