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A 57-year-old male asked:

So if last year i had negative occult blood test but a year later have positive blood occult test, is it possible something was miss last year?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Not necessarily: Some lesion could have developed over the period of a year. Some lesions bleed intermittently and that is why it is recommended that three samples be tested. Blood in the stool in an adult usually warrants a colonoscopy to find the cause of bleeding and to rule out colon cancer. Wish you good health!.

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Last updated Jul 16, 2017

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