Cultured microorganisms of 150 duodenoscopes
| Gastrointestinal flora independent of CFU count | Oral flora independent of CFU count | ||||
| No. of duodenoscopes | Quantity range | No. of duodenoscopes | Quantity range | ||
| Yeasts | 7 | 6–100 CFU | Moraxella spp. | 4 | 1 CFU |
| Klebsiella pneumoniae | 4 | 100 - >100 CFU | Streptococcus salivarius | 4 | 1–15 CFU |
| Enterobacter cloacae | 3 | 100 - >100 CFU | Moraxella osloensis | 3 | 1 CFU – 100 CFU |
| Escherichia coli | 2 | 50 and 100 CFU | Streptococcus mitis | 2 | 30 and 50 CFU |
| Klebsiella oxytoca | 2 | 100 CFU- >100 CFU | Neisseria flavescens | 1 | 1 CFU |
| Enterococcus faecium | 1 | 1 CFU | Rothia spp. | 1 | 10–30 CFU |
| Enterococcus faecalis | 1 | 100 | Streptococcus mutans | 1 | 2 CFU |
| Pseudomonas aeruginosa | 1 | 100 CFU | Streptococcus oralis | 1 | 5 CFU |
| Staphylococcus aureus | 1 | >100 CFU | Streptococcus spp. | 1 | 10 CFU |