Thanks Cajuncelt. Is it a regular blood test?
HI HighHope,
Here's some info for you, and Cajun probably has some input too. In the meantime, I thought this might help ya.
It's not like a regular blood test for cholesterol levels, etc.
Article from Healthline.com (I'm terrible writing long stuff. LOL)
A doctor might order a CEA test for the following reasons:
to help diagnose cancer in someone whose symptoms suggest that cancer is a possibility
to find out if the treatment a patient is receiving for their cancer is working. The treatment might include surgery, chemotherapy, or radiation, or a combination of all three
to find out if a cancer has come back (recurred) later on
A CEA test is most useful to monitor patients who already have been diagnosed with a type of cancer that is known to produce CEA. Not all cancers produce CEA. Increased levels of CEA may be found in the following cancers:
colorectal (colon) cancer
medullary thyroid carcinoma
breast cancer
cancer of the gastrointestinal tract
liver cancer
lung cancer
ovarian cancer
pancreatic cancer
prostate cancers
Importantly, the CEA test is not useful in diagnosing or screening the general population for cancers. It should not be used to screen or diagnose healthy asymptomatic people, even people at high risk of cancer.
If you are diagnosed with cancer, your doctor may begin monitoring levels of CEA before you begin treatment to establish a baseline amount. A single CEA value is usually not as informative as gathering many values over a period of time. Your doctor will perform the test repeatedly before, during, and after treatment to assess changes over time.
According to the Mayo Clinic, CEA levels will generally return to normal amounts between one and four months after the cancer has been successfully removed.