RT Journal Article SR Electronic T1 Guidelines for the investigation of chronic diarrhoea in adults: British Society of Gastroenterology, 3rd edition JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1380 OP 1399 DO 10.1136/gutjnl-2017-315909 VO 67 IS 8 A1 Arasaradnam, Ramesh P A1 Brown, Steven A1 Forbes, Alastair A1 Fox, Mark R A1 Hungin, Pali A1 Kelman, Lawrence A1 Major, Giles A1 O’Connor, Michelle A1 Sanders, Dave S A1 Sinha, Rakesh A1 Smith, Stephen Charles A1 Thomas, Paul A1 Walters, Julian R F YR 2018 UL http://gut.bmj.com/content/67/8/1380.abstract AB Chronic diarrhoea is a common problem, hence clear guidance on investigations is required. This is an updated guideline from 2003 for the investigations of chronic diarrhoea commissioned by the Clinical Services and Standards Committee of the British Society of Gastroenterology (BSG). This document has undergone significant revision in content through input by 13 members of the Guideline Development Group (GDG) representing various institutions. The GRADE system was used to appraise the quality of evidence and grading of recommendations.