Laboratory Procedures For each case patient contained in the study, excrement sample was collected and used to perform the rapid diagnostic test. The physician or nurse responsible for medical center performed the test and interpreted the result in accordance with the manufacturer’s instructions. In addition, for patients with a positive fast diagnostic test result, a filter-paper disk was dipped into fresh stool and placed in a microtube with several drops of regular saline solution .That’s low compared with the antibiotic-resistant bug MRSA, and the opportunistic C. Difficile bacteria, which causes potentially deadly diarrhea in people whose digestive systems have been put through heavy antibiotics. However, CRE is becoming more common in a brief amount of time, said Hayden, who wrote an accompanying editorial in the journal. I believe we learned from those situations these problems can spread very rapidly, she said. If we look at what offers happened with other comparable antibiotic-resistant organisms, we are able to see what will happen with this unless we do something now.