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Colon Cancer Genetic Testing - What Do the Results Mean?

Colon cancer genetic testing is a blood test that looks for the changed (mutated) genes that cause colon cancer. Although most people who get colon cancer do not have one of these mutated genes, having them greatly increases your chance of getting colon cancer.

A positive result means that you may have one of the changed genes that causes FAP or HNPCC. It also means that, without treatment, your chances of getting colon cancer are very high.

Recommended Related to Colorectal Cancer

Sigmoidoscopy for Colorectal Cancer Screening

Sigmoidoscopy (SIG-moy-DAH-skuh-pee) enables the physician to look at the inside of the large intestine from the rectum through the last part of the colon, called the sigmoid colon. Physicians may use this procedure to find the cause of diarrhea, abdominal pain, or constipation. They also use sigmoidoscopy to look for early signs of colorectal cancer in the colon and rectum. With sigmoidoscopy, the physician can see bleeding, inflammation, abnormal growths, and ulcers. For the procedure, you...

Read the Sigmoidoscopy for Colorectal Cancer Screening article > >

If you have a positive result, you will be able to take action that may help you and your family members live longer. This includes starting screening at a younger age and having screening tests more often.

A negative result means that none of these genes were found in your blood sample.

WebMD Medical Reference from Healthwise

Last Updated: August 27, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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