Definition: A test for the presence of microscopic amounts of blood in the stool that a person might not be able to see on their own. This is a non-invasive procedure involving chemical testing of a small sample of stool.
Fecal Occult Blood test
By Barbara Bradley Bolen, Ph.D., About.com
Updated: January 19, 2008
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
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