Description
CEA is a tumour marker used primarily to monitor certain cancers and support follow-up, providing a useful data point within medically guided care.
About the CEA Test
This test measures Carcinoembryonic Antigen (CEA), a protein that can be raised in some cancers, particularly of the bowel. It is used mainly to monitor known conditions and follow-up after treatment rather than as a standalone screen, since levels can also rise in smokers and with benign conditions. Results are always interpreted by a doctor in the context of your history and other investigations.
Preparation and turnaround
A venous blood sample is required with no fasting generally needed. Results are usually available within two to three working days. Because CEA can be influenced by factors such as smoking, results are best reviewed with a doctor who can advise on their significance.
Frequently asked questions
What is CEA used for?
It is used mainly to monitor certain cancers and support follow-up after treatment, rather than as a standalone screening test.
Can CEA be raised for non-cancer reasons?
Yes. Smoking and some benign conditions can raise CEA, so results are always interpreted by a doctor in context.
Is fasting required?
No fasting is generally required for the CEA test.
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