Clostridium difficile and C. diff Toxin Testing
Also Known As: C. difficile (culture, toxin gene NAAT or antigen test), Glutamate dehydrogenase test, GDH
Used to detect the presence of an infection caused by toxin-producing Clostridium difficile bacteria when a person has mild, moderate, or severe diarrhea that persists for several days, without another explanation, especially in people who have recently been on antibiotic therapy. A fresh liquid or unformed stool sample is collected in a sterile container. The stool sample should not be contaminated with urine or water. Once it has been collected, the stool should be taken to the laboratory immediately or refrigerated and taken to the lab as soon as possible.