A fecal immunochemical test (FIT) is a diagnostic tool that can diagnose colorectal cancer. It identifies hidden blood in the stool, which shows the condition of the bowel that may be due to colorectal cancer. A positive FIT result will require more investigation, and an early diagnosis of cancer generally leads to more effective treatment and a better outlook.
What is a FIT test?
A FIT test screens for colorectal cancer by looking for blood in the stool. It is one of the two major types of fecal occult blood screening. In some cases, Blood vessels in colon tumors or polyps may bleed with the release of stool, but the blood cannot be seen by the naked eye. A FIT test utilizes antibodies to detect hidden blood in the stool.
What does a positive FIT result mean?
When blood is seen it means the test is positive. However, it doesn’t mean you have colorectal cancer. Other diseases, which include hemorrhoids, benign polyps, and ulcers, may also lead to blood in the stool. However, a positive test shows that an individual should visit their doctor for other tests, like a colonoscopy.