ResultsBy Mayo Clinic Staff
Your doctor will review the results of the fecal occult blood test and then share the results with you.
June 06, 2014
- Negative result. A fecal occult blood test is considered negative if no blood is detected in your stool samples. If you had the test to screen for colon cancer and you're at average risk — you have no colon cancer risk factors other than age — your doctor may recommend waiting one year and then repeating the test.
- Positive result. A fecal occult blood test is considered positive if blood is detected in your stool samples. You may need additional testing — such as a colonoscopy — to locate the source of the bleeding.
- Fecal occult blood test and fecal immunochemical test: The test. American Association for Clinical Chemistry. http://labtestsonline.org/understanding/analytes/fecal-occult-blood/tab/test. Accessed March 6, 2014.
- Fletcher RH. Tests for screening for colorectal cancer: Stool tests, radiologic imaging and endoscopy. http://www.uptodate.com/home. Accessed March 6, 2014.
- Fletcher RH. Screening for colorectal cancer: Strategies in patients at average risk. http://www.uptodate.com/home. Accessed March 7, 2014.
- Fecal occult blood test and fecal immunochemical test: The test sample. http://labtestsonline.org/understanding/analytes/fecal-occult-blood/tab/sample/. Accessed March 6, 2014
- Ask Mayo Expert. Colorectal cancer screening and surveillance. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2014.
- Levin B, et al. Screening and surveillance for the early detection of colorectal cancer and adenomatous polyps, 2008: A joint guideline from the American Cancer Society, the US Multi-Society Task Force on Colorectal Cancer, and the American College of Radiology. Gastroenterology. 2008;134:1570.
- Flitcroft KL, et al. Colorectal cancer screening: Why immunochemical fecal occult blood tests may be the best option. BMC Gastroenterology. 2012;12:183.
- Medical devices: Fecal occult blood. U.S. Food and Drug Administration. http://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/InVitroDiagnostics/HomeUseTests/ucm125834.htm. Accessed Feb. 28, 2014.
- Ghosh AK, editor. Mayo Clinic Internal Medicine Review. 8th ed. Rochester, Minn.: Mayo Clinic Scientific Press, New York: Informa Healthcare USA; 2008.
- Brink D, et al. Institute for Clinical Systems Improvement. Colorectal cancer screening. https://www.icsi.org/guidelines__more/catalog_guidelines_and_more/catalog_guidelines/catalog_prevention__screening_guidelines/colorectal/. Accessed Feb. 28, 2014.
- US Preventive Services Task Force. Screening for colorectal cancer: U.S. Preventive Services Task Force Recommendation Statement. Annals of Internal Medicine. 2008;149:627.
- Fecal occult blood tests. American Society of Clinical Oncology. http://www.cancer.net/navigating-cancer-care/diagnosing-cancer/tests-and-procedures/fecal-occult-blood-tests. Accessed March 21, 2014.