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guaiac fecal occult blood test (gfobt)

the guaiac fecal occult blood test (gfobt) is used to screen for colorectal cancer. cancer in the colon or polyps in the colon are more likely to bleed than normal colon tissue is. this test uses a chemical to check for very small amounts of blood in the stool.

if signs of blood are found in the stool sample, more tests, such as a colonoscopy, will be done to find the cause.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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