FIT (Fecal Immunochemical Test) is a stool test used to look for possible signs of colorectal cancer. This test is able to look for a specific type of blood in your stool which helps identify if you have any polyps (pre-cancerous growths) in your colon.
What does the fit test check for?
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. Medicines and food do not interfere with the test.
How accurate is the colon fit test?
FIT: The fecal immunochemical test, or FIT, uses antibodies to detect blood in the stool, and it’s about 79% accurate at detecting colon cancer.
What is the test for polyps?
Colonoscopy, the most sensitive test for colorectal polyps and cancer. If polyps are found, your doctor may remove them immediately or take tissue samples (biopsies) for analysis. Virtual colonoscopy ( CT colonography), a minimally invasive test that uses a CT scan to view your colon.
Can polyps be detected without a colonoscopy?
However colonoscopy remains the most sensitive test for colorectal cancer screening and the identification of precancerous polyps. Stool based tests, such as Cologuard or FIT, are reasonable alternatives for patients who are unable or unwilling to undergo a standard colonoscopy. Screening saves lives.
Does Fit Test replace colonoscopy?
A single FIT test detects about 73 percent of colorectal cancers. But because you use FIT every year, 10 screenings over 10 years make it just as good as one colonoscopy every 10 years, Wender said.
Can hemorrhoids cause positive fit test?
Hemorrhoids are one of the major sources of rectal bleeding, and hemorrhoidal bleeding is likely to be a cause of FP FIT results. As expected, our study showed that hemorrhoids are significantly associated with FP FIT results.
Is cologuard better than fit test?
Cologuard can detect 92% of cancers but only 42% of large precancerous polyps. Cologuard is better at detecting cancer than FIT (92% vs 70% for FIT), but the false positive rate is higher. Cologuard has a 12% false-positive rate, and that rate increases as people age.
How good is fit test?
How accurate is the FIT result? No test is 100% accurate. There is a chance that a pre-cancerous polyp or cancer can be missed if it wasn’t bleeding when the test was done. Regular screening gives you the best chance of colorectal cancer being found early, when treatment may be more successful.
What is a high fit test score?
The cutoff value for a recommended colonoscopy following the FIT test is 100ng/mL (nanograms per milliliter), which means those with a test result of 100ng/mL or higher have enough blood in their stool to make doctors suspicious of colorectal cancer.
Can blood test detect polyps?
No laboratory test can determine definitively whether a given patient has a colonic polyp. A stool occult blood test can detect a fraction (20-40%) of colonic polyps that are larger than 10 mm in diameter but, it may also indicate other causes of gastrointestinal blood loss.
Do polyps show up in blood work?
It utilizes the fact that polyps in the colon emit biomarkers, which can be detected in the blood at very low levels. Recent studies show that the test can correctly identify adenomas, the polyps that convert to colon cancer, at a success rate of more than 80%.
Can a doctor tell if a polyp is cancerous by looking at it?
During a colonoscopy all polyps are removed regardless of their size or how they look. Only then can they be evaluated for any problems. In most cases they are benign, but only by testing them can your physician determine if they are harmless, in the pre-cancerous state, or malignant.