what is a hemoglobin in stool check?
A fecal occult blood test (FOBT) checks for hidden (occult) blood in the stool (feces).he use of tests for occult blood in disorders of the mouth, nasal passages, esophagus, lungs and stomach, while analogous to fecal testing, is often discouraged, due to technical considerations including poorly characterized test performance characteristics such as sensitivity, specificity, and analytical interference.