Test guide
C. diff Testing
C. diff testing checks a sample of your stool (poop) for signs of an infection with a bacteria called C. diff . C. diff is also called C. difficile or Clostridioides difficile . It used to be called Clostridium difficile .
What it is for
C. diff testing is most often used to find out if C. diff is causing diarrhea. But diarrhea can have many causes, so the test may be used with tests for parasites and other bacteria that also cause diarrhea. Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Limitations
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
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