Although there are several choices for colon (also called colorectal) cancer screening, University of Iowa Health Care experts recommend choosing one of two tools—a fecal immunochemical test (FIT) or a colonoscopy.
When you should start getting colon cancer screening varies based on your own medical history. In general, regular screening starts around age 45, but your doctor may recommend that you begin earlier if you have a family history of cancer.
Screening is generally not recommended after age 75, but some people may want to be screened until they are much older. The best thing for you to do is discuss it with your doctor.
A screening is a test done on a person who has no symptoms. If you have symptoms such as abdominal pain, changes in your bowel movements, or blood in your stool, you should discuss these with your doctor.
Read the following comparison of the two tests UI Health Care experts recommend. Then review this information with your doctor and get screened for colon cancer.
Commonly Asked Questions for FIT Tests and Colonoscopies
| Question | Colonoscopy | FIT |
|---|---|---|
| Can I self-refer without a doctor? | Yes. | No, you need to pick up a kit at your doctor’s office. |
| Is there a chance I could have a complication like a tear or bleeding problems? | Less than 1 out of 1,000 people experience complications. | No. |
| What do I need to do to prepare for the test? | Bowel cleansing with a prescribed laxative, and no solid foods the day before the exam. Possible adjustments to medications. | Pick up the test kit from the doctor’s office or lab. |
| Where is the test performed? | Doctor’s office, clinic, or hospital. | The test is performed at home via stool sample. |
| How often is the test required? | Once every 10 years (if results are normal). | Every year. |