A new stool DNA test that also incorporates stool hemoglobin testing and DNA methylation was approved by the US Food and Drug Administration in August 2014. The new test seems to detect colorectal cancer in 92.3 percent of patients. There are however false positive tests in 10 percent of individuals even though they had a negative colonoscopy. There is still uncertainty how this new stool DNA test should be used regarding the interval between tests and the costs. At the present time, complete colonoscopy remains the screening test of choice for colorectal cancer.