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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Guidelines
Clinical Resources Area
BSR guideline for the prescription and monitoring of conventional synthetic disease-modifying anti-rheumatic drugs
clinical-resource/Prescription-monitoring-anti-rheumatic-drugs
This guideline has been endorsed by the BSG.
Clinical Resources
Guidelines
Colorectal
Endoscopy
BSG/ACPGBI guidelines on the role of FIT in the endoscopic investigation of IDA 2025
clinical-resource/Role-of-FIT-in-the-investigation-of-IDA
This guideline was published in October 2025.