Why It Is Done

Stool tests are done:

• To look for signs of cancer.
  • FOBT and FIT tests look for blood in the stool. These tests are useful to screen for colon cancer, because tissue or polyps with cancer are more likely to bleed than normal colon tissue. If bleeding is found, more tests will be done to find the cause. It's important to call your doctor if a home test shows blood in your stool. A home test doesn't replace the need for a regular exam by your doctor.
  • Stool DNA tests look for abnormal changes. Colon cancer cells often contain DNA changes in genes. Cells with these changes can be shed into the stool, where this test may be able to find them.
• To help find the cause of abdominal pain.
• To check for the cause of anemia.
• As part of a routine physical exam for those with a higher chance of getting colorectal cancer, especially at age 50 and older.