What Is a Fecal Occult Blood Test? The fecal occult blood test (FOBT) looks for the presence of blood in the feces, which may be a sign of a problem in your digestive system. The amount of blood in ...
The results of this meta-analysis suggest that ASA decreases the PPV of g-FOBT but not that of i-FOBT for detecting significant colonic neoplasia. In contrast, warfarin appears to increase the PPV of ...