What you can expect

By Mayo Clinic Staff

The stool DNA test that's currently available isn't approved by the FDA, but it may be prescribed by a doctor under special rules. You'll receive the stool DNA test kit for collecting and submitting your stool sample at your doctor's office or by mail if you order it online. The kit includes a container that attaches to the toilet. After you collect the stool sample, you either return the kit to your doctor or mail it to the lab. The test requires only one sample.

Various methods to improve the ease of stool collection and sampling are under evaluation. The stool DNA test may be repeated every two to five years, but additional research must be done to determine the optimal interval for testing. In addition, Medicare currently doesn't cover the test, but some private insurers do.

Jun. 18, 2011