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The rapidly emerging evidence base for the use of faecal immunochemical testing (FIT) in the investigation of possible colorectal malignancy has resulted in widespread use of FIT as a triage tool between primary and secondary care. This has caused some disruption to established investigation pathways for iron deficiency anaemia (IDA) and confusion regarding the role of FIT in planning any investigation, especially with regard to the upper gastrointestinal (UGI) tract. To provide some clarity, the British Society of Gastroenterology (BSG) commissioned a small group drawn from the guideline groups for both the BSG faecal immunochemical test (FIT) 1 and iron deficiency anaemia (IDA)2 guidelines, the BSG endoscopy section and the Association of Coloproctology of Great Britain and Ireland (ACPGBI) to assess current evidence and produce guidelines.