Real stories from people who screened with Shield™.

Ron put off colon cancer screening for years. Choosing Shield helped detect cancer so Ron’s team moved toward treatment. Hear his story.

Ron Driggers 
Screened with Shield
Ron was compensated by Guardant Health for their time and likeness.

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As a cancer survivor, Jami understands what early detection can mean. Hear why she recommends Shield.

Jami McNees 
Screened with Shield
Jami was compensated by Guardant Health for their time and likeness.

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Dennis knew he needed to take control of his health to be there for his family. That’s why he screened for colon cancer with the Shield blood test.

Dennis Barnes 
Screened with Shield
Dennis was compensated by Guardant Health for their time and likeness.

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Nate Moore

Screened with Shield

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Shield is a blood test that can lead to earlier detection and I encourage my friends and family to screen for colon cancer with Shield.

Richard V.

Screened with Shield

After years of difficult health decisions, choosing to screen for colon cancer with Shield felt easy and empowering.

Carol-Sue B.

Screened with Shield

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Kathleen & Kirk

Screened with Shield

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I’m beyond grateful that Guardant Health came up with this test. I believe it saved my life.

Ron Driggers

Grandparent, Community Volunteer,
Screened with Shield

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Miami Sisters

Screened with Shield

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The process with Shield was quick and easy, and it gave me peace of mind. I would recommend Shield to anyone who has put off colon cancer screening - it's such a simple first step.

Susan K.

Screened with Shield

After my doctor retired, I wasn’t confident about my colon cancer screening options until I learned about Shield. The testing experience was excellent and I got my results quickly

Alan B.

Screened with Shield

After learning more about the test, I decided to try Shield. It was an easy, reassuring way to stay on top of my health.

Mary W.

Screened with Shield

As a cancer survivor, Jami understands what early detection can mean. Hear why she recommends Shield.

Jami McNees

Volunteer, Nature Lover,
Screened with Shield

Play Video Jami McNees

The process was quick, easy, and helped ease my nerves. The Shield test is a great option for people with anxiety around colon cancer screening.

Susan G.

Screened with Shield

Having an in-office blood draw available through my doctor was so reassuring.

Gloria K.

Screened with Shield

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Javier Sanchez

Screened with Shield

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Shield is an alternative screening option that can help more people get screened for colon cancer.

William S.

Screened with Shield

Just 10 minutes gave me peace of mind.

Ricky M.

Screened with Shield

I’m so thankful there’s a colon cancer screening option I can complete at my doctor’s office.

Megan M.

Screened with Shield

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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.