Which lab tests can be used to differentiate irritable bowel syndrome (IBS) from other disorders?

Updated: Dec 11, 2019
  • Author: Jenifer K Lehrer, MD; Chief Editor: BS Anand, MD  more...
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Answer

Screening studies to rule out disorders other than IBS include the following:

  • Complete blood cell count with differential to screen for anemia, inflammation, and infection

  • A comprehensive metabolic panel to evaluate for metabolic disorders and to rule out dehydration/electrolyte abnormalities in patients with diarrhea

  • Stool examinations for ova and parasites, enteric pathogens, leukocytes, Clostridium difficile toxin, and possibly Giardia antigen


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