A GI functional marker test, or test of gut function, can be very useful to detect some gut conditions. It can help diagnose inflammatory bowel disease (IBD), predict pancreatic insufficiency (or need for digestive enzymes), and potentially detect leaky gut. However, patients should beware of paying attention to markers like secretory IgA, fecal lysozyme, chymotrypsin and beta-glucuronidase that are problematic or unvalidated. Also—because lab testing processes vary and markers can be difficult to filter even for clinicians—it’s important that patients work with an experienced clinician in order to properly interpret their results. https://drruscio.com/?p=31764
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