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Roux-en-Y characteristics that may alter mt-sDNA test results: (A) Voluminous stool output related to bacterial overgrowth, altered gut microbiome, or dumping; (B) Mucosal disruption/bleeding from anastomotic ulceration; (C) Intussusception; or (D) Internal herniation. Used with permission of Mayo Foundation for Medical Education and Research, all rights reserved.
