"Screening saves lives and the type of test matters." — American Gastroenterological Association
Colonoscopy Remains the Gold Standard for Colorectal Cancer Screening
The American Gastroenterological Association (AGA) has released new clinical guidance comparing colorectal cancer screening options. Colonoscopy is recommended as the strongest option because it can both detect cancer and remove precancerous polyps during the same procedure.
Stool Tests: A Reasonable Alternative
When colonoscopy is not available, stool tests are considered a reasonable alternative. However, abnormal results require a follow-up colonoscopy, and the testing must be repeated at the recommended intervals.
Blood Tests: Less Effective
Blood tests are less effective than colonoscopy or stool tests at detecting colorectal cancer and cannot identify precancerous polyps. This is significant because finding and removing those growths is the primary goal of screening.
Why This Guidance Matters Now
The new guidance comes as an increasing number of screening options draw attention to the growing market of available tests. The AGA emphasizes that while screening saves lives, choosing the right test is critical.
The full clinical practice update, titled "Current Role of Blood Tests for Colorectal Cancer Screening," is available for healthcare providers seeking more detailed information.