Carcinoembryonic antigen (CEA) is a protein normally found in the tissue of a developing fetus. Levels of CEA in the blood decrease after birth. CEA is normally found in small amounts in the blood of most healthy people.
A CEA test may be done to:
A CEA test is usually done in a private laboratory or hospital laboratory. No special preparation is usually needed.
An increased CEA value may be due to:
In cancerous conditions:
The doctor will decide if more tests, procedures, follow-up care or additional treatment is needed.