Faecal haemoglobin-based referral and investigation prioritisation is associated with colorectal cancer-specific survival in symptomatic patients: a retrospective observational study.

There was a higher proportion of patients with TNM stage 4 disease in those referral groups with f-Hb <10 ug/g (25–29%) compared to those with f-Hb ≥10 ug/g (20–25%), however this also did not reach statistical significance ( p adj =0.226) Furthermore, at multivariable analysis none of the f-Hb <10 ug/g referral subgroups had significantly poorer CSS when compared to those with f-Hb ≥10 ug/g referred at USC priority (Table 4 ).

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