Description of the test
Checking the stool (feces) for blood helps doctors make a diagnosis. Occult blood means that blood is "hidden" in the stool and therefore is not necessarily visible. The blood is detected using chemical analysis. Blood in the stool may indicate various conditions including inflammatory bowel disease (IBD), ulcers, hemorrhoids, or colon cancer.
A sterile container that may be used to collect a stool sample
How often should this test be performed?
The frequency of this test is determined by your doctor. Testing is recommended every one to two years for people over 50 years of age to screen for colorectal cancer. More frequent testing or testing at an earlier age may be recommended if you are at an increasted risk of colorectal cancer (e.g., if you have a family history of colon cancer).
Why is this test performed?
Doctors often request this test to screen for colorectal cancer for people over 50 years of age. The test is also occasionally ordered to help diagnose other problems in the digestive tract.
Are there any risks and precautions I should know about?
There are very few health risks for this test. However, dealing with stool may be a difficult experience for some people. Try to follow instructions closely and do things slowly to avoid problems. Wash your hands before and after collecting the sample.