Fecal Immunochemical Test (FIT) is a diagnostic technique that examines stool samples for traces of non-visible blood, which could potentially indicate conditions including colorectal cancer (also known as

bowel cancer Colorectal cancer (CRC), also known as bowel cancer, colon cancer, or rectal cancer, is the development of cancer from the colon or rectum (parts of the large intestine). Signs and symptoms may include blood in the stool, a change in bowe ...

). Symptoms which could be caused by bowel cancer and suggest an FIT include a change in bowel habit, anaemia, unexplained weight loss, and abdominal) pain. A 2022 UK guideline recommends the use of a FIT threshold of fHb ≥10 µg Hb/g to select patients with symptoms for an urgent referral for colorectal cancer investigation.Monahan KJ, Davies MM, Abulafi M, et al
Faecal immunochemical testing (FIT) in patients with signs or symptoms of suspected colorectal cancer (CRC): a joint guideline from the Association of Coloproctology of Great Britain and Ireland (ACPGBI) and the British Society of Gastroenterology (BSG)
Gut 2022;71:1939-1962

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