The guaiac-based fecal occult blood test in healthy dogs: Evaluation of the effects of diet, and the ability of the test to detect fecal occult blood.

The gFOBt was not influenced by either the HA or EN diets. The gFOBt positivity was associated with the dose of blood and the fecal collection event. However, caution is needed in the interpretation of results due to the lack of an association between gFOBt positivity and increasing doses of blood in the same dog.