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Definition of Test, stool occult blood

Test, stool occult blood: A test to see whether there is blood in the bowel movement. Also called a fecal occult blood test: A test to check for microscopic blood in stool. (Fecal refers to stool. Occult means hidden.) Abbreviated stool OB.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012

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