This flowchart should be used in conjunction with current UK guidance, which it does not replace (see references). Consult other guidance in the case of immunosuppression or chronic diarrhoea (> 4 weeks).
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Guidance
BSG Nurses Association
Endoscopy
BSG, ACPGBI and AUGIS guidance on the scope of professional practice for clinical endoscopists
clinical-resource/Guidance-on-practice-for-clinical-endoscopists
This document focuses on the scope of professional practice for clinical endoscopists (previously known as non- medical endoscopists/nurse endoscopists).

Guidance
BSG, Association of Upper Gastrointestinal Surgery of Great Britain and Ireland & Royal College of Pathologists Delphi consensus guidance on biopsy sampling during upper GI endoscopy in adult patients
clinical-resource/BSG-AUGIS-RCPath-Delphi-consensus-guidance
These guidance statements represent a practical approach to tissue sampling in the upper gastrointestinal tract during endoscopy in adult patients.