Fecal Occult Blood Test (FOBT)

The fecal occult blood test (FOBT) is a test that 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.

Is it an emergency?

If you or someone in your care has chest pains, difficulty breathing, or severe bleeding, it could be a life-threatening emergency. Call 9-1-1 or the local emergency number immediately.
If you are concerned about a possible poisoning or exposure to a toxic substance, call Poison Control now at 1-800-567-8911.

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