Why get tested? To help determine whether cancer is present in the body, although it is not recommended as a general population screening test; to monitor cancer treatment, including response to therapy and recurrence; to help in staging of cancer
When to get tested? When your doctor thinks your symptoms suggest the possibility of cancer; before starting cancer treatment as well as at intervals during and after therapy
Sample required? A blood sample drawn from a vein in the arm
This article was last reviewed on March 4, 2009.
This page was last modified on April 8, 2009.
The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.
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