What screening test is recommended for colorectal cancer in individuals over 50?

The recommended screening test for colorectal cancer in individuals over 50 is the occult blood test, also known as the fecal occult blood test (FOBT). This test is specifically designed to detect hidden (occult) blood in the stool, which can be an early sign of colorectal cancer or other gastrointestinal issues. Regular screening is crucial as it can lead to early detection and significantly improve treatment outcomes.

Detecting hidden blood can indicate the presence of polyps or carcinomas in the colon, making this test a vital component of routine health assessments for those in the appropriate age group. The guidelines recommend starting screening at age 45 or 50 for average-risk individuals, underscoring the importance of this test in preventive health strategies for colorectal cancer.

In contrast, other tests listed, such as CEA (Carcinoembryonic Antigen) and AFP (Alpha-Fetoprotein), are tumor markers primarily used for monitoring cancer treatment or recurrence rather than for routine screening. Fecal trypsin, usually associated with pancreatic function, is not utilized for colorectal cancer screening. Therefore, the fecal occult blood test stands out as the appropriate choice for colorectal cancer screening in individuals over 50.