CEA
Formal name: Carcinoembryonic Antigen
Related tests: Tumor markers
The Test Sample
What is being tested?
Carcinoembryonic antigen (CEA) is a protein that is found in embryonic tissues. By the time a baby is born, detectable levels in the blood disappear. In adults, CEA is normally present at very low levels in blood. When the concentration of CEA is elevated, it may indicate that a cancer is present. However, an increase in CEA may also be due to benign conditions.
How is the sample collected for testing?
A blood sample is taken by needle from a vein in the arm.
NOTE: If undergoing medical tests makes you or someone you care for anxious, embarrassed, or even difficult to manage, you might consider reading one or more of the following articles: Coping with Test Pain, Discomfort, and Anxiety, Tips on Blood Testing, Tips to Help Children through Their Medical Tests, and Tips to Help the Elderly through Their Medical Tests.
Another article, Follow That Sample, provides a glimpse at the collection and processing of a blood sample and throat culture.
Is any test preparation needed to ensure the quality of the sample?
No test preparation is needed.
