What are the current guidelines for referring patients with suspected colorectal cancer for further investigation?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025Updated: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

Refer adults using a suspected cancer pathway referral (for an appointment within 2 weeks) for colorectal cancer if they have a faecal immunochemical test (FIT) result of at least 10 micrograms of haemoglobin per gram of faeces .

For people who have not returned a faecal sample or have a FIT result below 10 micrograms of haemoglobin per gram of faeces, ensure safety netting processes are in place and do not delay referral if there is strong clinical concern due to ongoing unexplained symptoms .

Refer adults with a rectal mass or abdominal mass, or if FIT is positive, using a suspected cancer pathway referral within 2 weeks .

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