FDA green lights new non-invasive colorectal cancer screening test

August 13, 2014 3:32 AM

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The U.S. Food and Drug Administration announces the approval of Cologuard, the first non-invasive DNA screening test for colorectal cancer. The screening test is stool-based and detects red blood cells and DNA mutations that could suggest specific types of abnormal growths that could be cancerous, such as colon cancer, or a precursor to cancer.

Cologuard works by detecting hemoglobin in a stool sample. Hemoglobin is a protein molecule that is a part of blood. The screening test can also find mutations that are linked with colon cancer in the DNA of cells. Patients with positive test results will be urged to undergo a diagnostic colonoscopy...

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