what is the cancer cea level?
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Answers:
CEA stands for carcinoembryonic antigen, and is a cancer-specific marker in the blood. This protein is usually associated with cancer in the GI tract. Other cancers can produce levels of this protein as well, such as breast, lung, and ovarian cancers. Because it can be produce by a number of cancers, it's elevation in the bloodstream will prompt doctors to evaluate further for the source. Once a cancer has been treated, the CEA levels can be monitored to determine a reccurence before other tests would show positive.
The normal range for CEA in an adult non-smoker is <2.5 ng/ml and for a smoker <5.0 ng/ml. Once cancer is identified, levels >20 ng/ml before therapy are associated with cancer which has already spread (metastatic disease). Benign disease does not usually cause an increase above 10 ng/ml.
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