New blood test developed by Silicon Valley-based group screens for colon cancer
Briefly

More than 53,000 Americans may die from colon cancer, with deaths on the rise in those under 50. Guardant Health's blood test offers hope for early detection.
The blood test by Guardant Health can detect 83% of early cancers but may miss some large polyps, emphasizing the importance of screening by age 45.
Read at ABC7 San Francisco
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