Colorectal Cancer Screening Tests Test
Colorectal cancer screening tests check for colorectal cancer before you have symptoms. They can find cancer early or prevent it by removing abnormal growths called polyps.
What this test measures
These tests check for signs of colorectal cancer or polyps in the colon or rectum. Some tests also find hidden blood in the stool.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Frequently asked questions
What is colorectal cancer screening?
It is a test to check for colorectal cancer before you have symptoms. It can find cancer early or prevent it by removing polyps.
What are polyps?
Polyps are abnormal growths in the colon or rectum. Most are benign but could become cancerous if not removed.
What happens if a stool test is abnormal?
It doesn't necessarily mean you have cancer. Your provider will likely order more tests, such as a colonoscopy.
What happens if a colonoscopy finds polyps?
The polyps are removed and sent to a lab. Depending on size and number, your provider may recommend more frequent colonoscopies.
What happens if a virtual colonoscopy finds polyps?
You may need a traditional colonoscopy so your provider can get a tissue sample, sometimes on the same day.
Related lab tests
Sources
- MedlinePlus: Colorectal Cancer Screening Tests — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.