Fecal occult blood testing - hemosure is a trade name recognized worldwide in fecal immunochemical test (FIT). We make our FIT test fit your needs by making all the components available in a smart economical ordering kits as well as having all items available for sale separately. Regardless of how many tests you do per month there is packaging that will work best for you and your office or laboratory! Hemosure one-step fecal immunochemical test is a qualitative, sandwich dye conjugate immunoassay and employs a unique combination of monoclonal and polyclonal antibodies to selectively identify in human feces, as an aid in diagnosis of fecal occult blood, with a high degree of sensitivity. In less than five minutes, elevated levels of human hemoglobin as low as 0.05 ug/mL can be detected and positive results for high levels of hemoglobin can be seen in the test as early as 1 or 2 min.