&quot;Development and Validation of a Biomarker for Diarrhea-Predominant Irritable Bowel Syndrome in Human Subjects&quot;<p><a href="http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal.pone.0126438" rel="nofollow">http:&#x2F;&#x2F;journals.plos.org&#x2F;plosone&#x2F;article?id=10.1371&#x2F;journal....</a><p>Large cohort study done determining what the biological mechanism are of IBS (irritable bowel syndrome).<p>Defines a new test, IBSChek which can be used to determine if a patient has a subtype of IBS.  Anyone can get this test done now.