Your Life
An estimated 1 in 3 people do not stay up-to-date with colonoscopy screenings. People find current screenings so unpleasant that many skip them. There are two current screening options. First, collecting a fecal sample at home and mailing it in for analysis, or second, taking laxatives and going under sedation for a colonoscopy procedure. Colorectal cancer remains the second leading cause of cancer death in the U.S. and is one of the most common types of cancer overall. Early detection at the precancerous stage is so important. If everyone in the U.S. got screened regularly, deaths linked to colorectal cancer may drop by as much as 90%.
Luckily, researchers are making promising strides in developing a blood test alternative for colon cancer screening. In clinical trials, the test is proving to be highly accurate. The blood test can detect DNA shed into the bloodstream from tumors, and in a trial of more than 7,800 people, the new test accurately detected colon cancer at early, treatable stages 87% of the time. The false-positive rate was 10%. The test was less successful at detecting advanced precancerous lesions, detecting just 13%. In comparison, fecal tests are about 42% successful at early detection, and colonoscopies are up to 93% accurate.
The American Gastroenterological Association advises using blood tests as an additional tool, but they should not replace colonoscopies.
New Blood Test for Colon Cancer Highly Accurate in Trial
by Lisa O’Mary
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