According to the Mayo Clinic1, research shows the stool DNA tests are effective at detecting colon cancer and polyps that could become cancer. 

• Cancer or polyps shed cells in the colon that have DNA changes into one’s stool
• Highly sensitive lab tests are needed to determine these changes in DNA
• A colonoscopy will be scheduled if a positive result is found to examine the inside of the colon

An at-home DNA stool test, like Cologuard2, may be a good option for those 45 or older at risk of colorectal cancer. According to clinical studies, Cologuard is 92% effective in detecting cancer in the colon.

1. Mayo Clinic

2. Cologuard

Collecting the samples: 

You'll get a kit in the mail to use to collect your entire stool sample at home. The kit will have a sample container, a bracket for holding the container in the toilet, a bottle of liquid preservative, a tube, labels, and a shipping box. The kit has detailed instructions on how to collect the sample. Be sure to follow the instructions that come with your kit. If you have any questions about how to use your kit, contact your doctor's office or clinic. Once you have collected the sample, return it as instructed in the kit.

If the test is positive (if it finds DNA changes or blood), a colonoscopy will be need to be done.

Click here to read more about the science behind DNA Stool Tests