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    Carcinoembryonic Antigen (CEA)

    Carcinoembryonic Antigen (CEA)



    Why It Is Done

    The carcinoembryonic antigen (CEA) test is used to:

    • Find how widespread cancer is for some types of the disease, especially colon cancer.
    • Check the success of treatment for colon cancer.
      • CEA levels may be measured both before and after surgery to evaluate both the success of the surgery and the person's chances of recovery.
      • CEA levels may be measured during treatment with medicines to destroy cancer cells (Reference chemotherapy Opens New Window). This provides information about how well the treatment is working.
    • Check to see if cancer has returned after treatment.


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