CEA

About This Test
Carcinoembryonic antigen (CEA) is a protein that can be released by some cancers, most often of the colon and rectum. Levels can also rise from non-cancer causes such as smoking, inflammation, or liver disease, so results are interpreted with scans and history. It’s most useful for tracking a known cancer over time rather than screening healthy people. This test is commonly included in targeted follow-ups to support early detection of recurrence.

Patient Preparation
No fasting needed

Best Time to Test
Anytime

Tests Included
CEA

Why is it done
Monitoring response to treatment and checking for recurrence in colorectal and other GI cancers; supporting evaluation of unexplained weight loss, anemia, or bowel changes when cancer is suspected; not recommended as a stand-alone screening test.