After a Cologuard screening test for colon cancer comes back positive, patients may have to pay for additional diagnostic tests. Exact Sciences hide caption

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Before your doctor gets to this, make sure he'll bill the colonoscopy as a screening test rather than a diagnostic one. Sebastian Schroeder/iStockphoto.com hide caption

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Can A Colon Cancer Test Level The Playing Field For Alaska Natives?

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Before the colonoscopy begins, it pays to ask your doctor some pointed questions. Sebastian Schroeder/iStockphoto.com hide caption

toggle caption Sebastian Schroeder/iStockphoto.com