A trained Labrador Retriever detects colorectal cancer almost as accurately as a colonoscopy, research from Japan shows.
Other non-invasive tests do not detect bowel cancer as early and as efficiently as the Labs.
Other diseases of the lower bowel such as inflammatory bowel disease or benign colorectal disease don’t confuse the dogs. They react only to colorectal cancer.
Scientists are trying to pin down the volatile components that the dogs are responding to so that they can formulate a chemical test for them.