Clinical Research Directory

Inclusion Criteria: * Adults aged ≥22 years No abdominal symptoms and no history of inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), or other chronic intestinal disorders May have undergone colonoscopy with negative findings within the past month or never undergone colonoscopy Able and willing to provide a stool sample according to the collection protocol Able to understand the study and sign the informed consent form (ICF) Exclusion Criteria: * Unable or unwilling to provide a stool sample Known active intestinal cancer or history of intestinal cancer with abnormal clinical findings Currently receiving chemotherapy or systemic immunosuppressive medications Use of proton pump inhibitors (PPIs) or H2-receptor antagonists within the last 2 weeks Use of NSAIDs (including aspirin) for 7 or more days in the past 2 weeks Presence of gastrointestinal symptoms such as abdominal pain, diarrhea, altered appetite, weight loss, or anemia Samples collected not following protocol requirements Any other condition that, in the opinion of the investigator, may interfere with study participation or data validity