“I screened for
colon cancer
with the Shield™
blood test”

Patrick Dempsey for Shield

Actor, Advocate, Screened with Shield.

*Patrick Dempsey is a paid partner of Guardant Health

Why screening for colon cancer matters.

Why screening for colon cancer matters.

“For people who’ve faced colon cancer, moving forward is about more than recovery. It’s about getting back to the moments that make life feel normal again. I believe that screening for colon cancer helps make that possible, giving people a way to stay ahead of cancer and keep showing up for what matters most.”

—Patrick Dempsey for Shield

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My mom’s cancer experience shaped my perspective

It’s what guided my choice to partner with Shield.

“My mom was strong in a way that stayed with me. Watching her face cancer changed how I think about health, family, and showing up for the people you love. That experience is a big part of why I pay attention to my health today, and why partnering with Shield for colon cancer screening felt personal.

—Patrick Dempsey for Shield

“My mother was a fighter... her resilience in fighting cancer gave me strength. Her journey is the reason I built the Dempsey Center and why I chose to partner with Shield.”

—Patrick Dempsey for Shield

Colorectal cancer is the second leading cause of cancer deaths. Knowing earlier has the power to change that.

Shield is done with just a blood draw

No at-home kit. No stool handling. No mail back handling.

Just a blood test

Sample collected in minutes

No handling of stool

Results in ~2 weeks

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Screen for colon cancer with just a blood test.

It’s important to be proactive about your health, including getting screened for colon cancer. That’s why I partnered with Shield by Guardant Health. It’s an FDA-approved blood test that only takes a few minutes and can be done at any doctor’s visit.

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Don’t wait. Get screened today.

Ask your doctor about the Shield blood test for colon cancer screening—from the company trusted in blood tests for cancer for over a decade.

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Important Product Information

Intended Use

The Shield™ test is a qualitative, in vitro diagnostic test intended to detect colorectal cancer derived alterations in cell-free DNA from blood collected in the Guardant Shield Blood Collection Kit.
Shield is intended for colorectal cancer screening in individuals at average risk for the disease, age 45 years or older. Patients with a positive result should be followed by colonoscopy. Shield is not a replacement for diagnostic colonoscopy or for surveillance colonoscopy in high-risk individuals. This test is performed at Guardant Health, Inc.

Precaution: Based on data from clinical studies, Shield has limited detection (55%-65%) of Stage I colorectal cancer and does not detect 87% of precancerous lesions. One out of 10 patients with a negative Shield result may have a precancer that would have been detected by a screening colonoscopy. Shield demonstrated high detection of Stages II, III, and IV colorectal cancer.

Limitations and Other Important Information: The Shield test is not intended for patients that have personal history of colorectal cancer, adenomas, or other related cancers; or those who had a positive result on another colorectal cancer screening method within the last six months, have been diagnosed with a condition associated with high risk for colorectal cancer such as Inflammatory Bowel Disease (IBD), chronic ulcerative colitis (CUC), Crohn’s disease; or who have a family history of colorectal cancer, or certain hereditary syndromes. Providers should discuss the most appropriate screening test to use with patients depending on their medical history and individual circumstances. Shield may produce a false negative or false positive result. A false negative result may occur when the Shield test does not detect a colorectal tumor signal while a colonoscopy identifies a colorectal cancer. A negative result does not guarantee the absence of colorectal cancer or advanced adenoma, and patients should continue participating in colorectal cancer screening programs at the appropriate guideline-recommended intervals. A false positive result may occur when the Shield test generates a positive result while a colonoscopy will not find colorectal cancer or advanced adenoma.

Please read our Provider Brochure for complete product information about the Shield test including full safety information.

  1. References:
  2. National Cancer Institute. Cancer Stat Facts: Colorectal Cancer. Accessed May 7, 2024. https://seer.cancer.gov/statfacts/html/colorect.html