Occult blood

**Occult Blood**

Occult blood refers to hidden or microscopic traces of blood that are not visible to the naked eye but can be detected through specific tests. It is commonly used in medical screenings, such as fecal occult blood tests (FOBT), to identify hidden blood in stool samples-a possible early indication of conditions like colorectal cancer, gastrointestinal bleeding, or other digestive tract disorders. Detecting occult blood is an important step in preventive health care, enabling early diagnosis and treatment of underlying issues before more obvious symptoms appear.