STAT+: Early cancer-detection market heats up as Guardant Health launches colon cancer test

Bay Area biotech Guardant Health announced the commercial launch of its early-detection colon cancer test on Monday, marking the latest twist in an escalating race to spot cancer sooner and more accurately.

The company’s test, known as Shield, is available to adults 45 and older who aren’t up to date with current screening guidelines, don’t have symptoms, and are at average risk of colon cancer. Shield is a lab-developed test, meaning that it hasn’t been approved by the Food and Drug Administration and that each sample (about a tablespoon of blood) must be sent to Guardant’s lab.

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