Shield colorectal blood test.

No. The Shield blood draw needs no fasting or bowel preparation. If other blood tests are drawn at the same visit, the practice will tell you whether those need fasting.

It is not a cancer diagnosis. It means the test found DNA changes that can be linked to colorectal cancer. Your physician reviews the result with you and explains the next steps, which usually include a colonoscopy to find the cause.

A negative result does not rule out colorectal cancer. Continue screening on the schedule your physician recommends, and tell your physician about new symptoms, such as rectal bleeding, rather than waiting for your next test.

Yes. Ask the practice for the current charge. If a colonoscopy is recommended, your physician arranges the referral. That procedure is billed separately.