OCCULT BLOOD TEST(OBT)

The Occult Blood Test (OBT)—often called the Fecal Occult Blood Test (FOBT) or Stool for Occult Blood—is a non-invasive laboratory test that detects microscopic, hidden blood in your stool. It is primarily used to screen for colorectal cancer, polyps, ulcers, or other gastrointestinal bleeding.