Anon-invasive method to check for any possible signs of polyp or colon cancer is to check the fecal samples and test for the presence of blood. the blood in feces is not typically visible to the naked eye. what is the correct term used to describe this condition or test?

The answer is a fecal occult blood test (FOBT) that checks for hidden (occult) blood in the stool (feces) by use of a microscope.  The major disadvantage is that it is not very accurate because it is not a 100% reliable as an indicator of colorectal cancer. Sigmoidoscopy is often undertaken following a positive FOBT

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