Diagnosis by patient risk stratification and faecal haemoglobin (fHb) result
| Meets local criteria for 2ww referral | Meets local criteria for FIT | Meets neither criteria | ||||
| fHb <10 µg/g | fHb ≥10 µg/g | fHb <10 µg/g | fHb ≥10 µg/g | fHb <10 µg/g | fHb ≥10 µg/g | |
| CRC | 1 | 7 | – | – | – | – |
| HRA | 1 | 8 | – | 4 | 1 | – |
| LRA | 9 | 10 | 16 | 16 | 5 | 4 |
| Diverticular disease | 6 | 8 | 4 | 5 | – | 1 |
| Vascular ectasia | – | 2 | – | – | – | 1 |
| IBD | – | – | – | 1 | – | 1 |
| Other* | – | 1* | – | – | – | – |
| Normal | 19 | 14 | 38 | 20 | 11 | 3 |
*Whipworm infestation.
CRC, colorectal cancer; fHb, faecal haemoglobin; FIT, faecal immunochemical testing; HRA, high-risk adenoma; IBD, inflammatory bowel disease; LRA, low-risk adenoma; 2ww, 2-week wait.