Fecal Immunochemical Test in Diagnosing Colorectal Cancer Among Vietnamese Patients with Lower Gastrointestinal Symptoms

Eligible participants will be instructed to collect their two stool samples within seven days prior to undergoing bowel preparation. These stool samples will be then submitted for a quantitative FIT (OC-SENSOR, EIKEN CHEMICAL, Japan). Colonoscopic observations and histopathological findings will be employed as the definitive reference standards for diagnosis.