Blood in stool is a manifestation of gastrointestinal damage including: tumors, polyps, bleeding, diverticular disease, colorectal cancer... Blood appearing in stool may not be visible to the naked eye when the amount of blood is very small. Therefore, a test for occult blood in stool helps detect this.

Currently, Vinmec Times City International General Hospital is applying two types of tests: qualitative and quantitative fecal occult blood tests.