As a healthcare specialist, I am well-versed in various medical tests and their purposes. The fecal immunochemical test, or FIT, is a significant tool in the early detection of colorectal cancer. It is a non-invasive screening method that identifies the presence of occult, or hidden, blood in the stool. This blood can be an indicator of abnormalities in the lower gastrointestinal tract, including the presence of cancerous or pre-cancerous polyps.

The FIT is particularly useful because it is easy to administer and does not require a colonoscopy, which can be invasive and uncomfortable for patients. It is typically performed by collecting a small sample of stool on a test card or device. The sample is then analyzed for the presence of human hemoglobin, a protein found in red blood cells, which, if detected, suggests the presence of blood.

The test is considered part of a broader colorectal cancer screening strategy, which may also include other methods such as sigmoidoscopy, colonoscopy, or virtual colonoscopy. It is recommended for individuals who are at average risk for colorectal cancer, typically starting at the age of 50, although the exact age to begin screening can vary based on individual risk factors and medical guidelines.

It is important to note that a positive FIT result does not confirm the presence of cancer; it only indicates the need for further investigation. If the FIT is positive, a follow-up diagnostic test, such as a colonoscopy, is usually recommended to determine the cause of the bleeding.

The FIT has several advantages, including its non-invasive nature, ease of use, and relatively high sensitivity for detecting blood in the stool. However, it may not detect all cases of colorectal cancer, particularly those that do not cause bleeding. Therefore, it should be used as part of a comprehensive approach to colorectal cancer screening.

In conclusion, the fecal immunochemical test is a valuable screening tool for colorectal cancer. It is a simple, non-invasive method that can help identify individuals who may require further diagnostic evaluation to confirm the presence of cancer or other gastrointestinal issues.

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Fecal immunochemical test (FIT) To use the sharing features on this page, please enable JavaScript. The fecal immunochemical test (FIT) is a screening test for colon cancer. It tests for hidden blood in the stool, which can be an early sign of cancer. FIT only detects human blood from the lower intestines.Aug 1, 2017read more >>