A positive fecal occult blood test indicates possible bleeding, inflammation, pathogenic bacterial infection, or tumor in the gastrointestinal tract.
Positive fecal occult blood is usually the presence of occult blood in the stool, indicating bleeding in the intestine of about 5 ml, when the stool is normal in color but positive for laboratory tests.
It is usually due to intestinal inflammation, pathogenic bacterial infection, or tumor. In addition to the fecal occult blood test, further laboratory tests are needed to clarify and determine the cause of the bleeding, for example, blood cell tests, white blood cell tests, bacterial tests, and stool microscopy. A positive fecal occult blood test result only indicates the possible presence of upper gastrointestinal bleeding (gastric ulcer, gastritis, gastric cancer), or the presence of lower gastrointestinal bleeding (colitis, colon cancer, etc.), which requires further tests, such as colonoscopy, gastroscopy, etc. When the cause is determined, the patient should be seen promptly and treated with medication as directed by the doctor.