The stool DNA test is safe and poses no risks.

Limitations of the test may include:

  • A stool DNA test could lead to additional testing. If your stool DNA test shows DNA changes that are associated with colon polyps or colon cancer, you'll likely undergo additional testing to find the source.

    Your doctor would likely recommend colonoscopy, which includes removal of polyps or biopsy procedures to remove tissue samples for testing. If you undergo these additional tests, but it's determined that you don't have cancer, you could be exposed to additional risks for no reason.

  • A stool DNA test can't detect all cancers. It's possible that colon cancer or precancerous polyps could go undetected during a stool DNA test. This might occur due to a technical error or to insufficient quantity of your stool sample.
Aug. 13, 2014