Final answer:
The cologuard stool DNA test is a noninvasive test used for the detection of colorectal cancer. It works by looking for DNA from cancer cells in the stool sample. If the test comes back positive, further examination of the colon and rectum using colonoscopy is required to confirm the diagnosis.
Step-by-step explanation:
The cologuard stool DNA test is a noninvasive test used for the detection of colorectal cancer. It works by looking for DNA from cancer cells in the stool sample. The patient can collect the sample at home using a test kit and send it to a lab for analysis. If the test comes back positive, further examination of the colon and rectum using colonoscopy is required to confirm the diagnosis.