A 21-year-old member asked:
How are fecal occult blood tests performed?
2 doctor answers • 3 doctors weighed in
Pathology 23 years experience
In the lab: Great question. A great way to screen for intestinal cancer as cancers cause small amounts of bleeding, which is then passed in the feces. A less sensitive chemical method and more accurate immuno method can be used. Not all cancers will leak blood, blood in feces is not always cancer and other substances can have false results. Ask your doc about colonoscopy if >50 or family history of cancer.
6.1k viewsReviewed >2 years ago
Colon and Rectal Surgery 42 years experience
Varies: Usually it requires a sample of the stool and then exposing it to a reagent either chemical or immunologic and comparing the results to a control sample. Some can be done at home and others require a sample obtained in the doctors office. The sensitivity and specificity of the result depends upon the type of test and how it is performed.
5.6k viewsAnswered >2 years ago
A 45-year-old member asked:
What is the reagent found in fecal occult blood tests?
1 doctor answer • 1 doctor weighed in
Pathology 49 years experience
4.9k viewsAnswered >2 years ago
Last updated Sep 8, 2012
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