fecal immunochemical test
[fee-kuhl im-you-no-KIM-uh-kuhl test]
also called FIT. A test to look for hidden blood in the stool, which could be a sign of cancer. Unlike the fecal occult blood test (FOBT), this test is not affected by vitamins or foods, so there are no dietary restrictions before taking the test. See also colorectal cancer screening, false positive, fecal occult blood test.