Had Surgery For Goiter Removal, No Cancer Found. Scan Showed Growing Thyroid. Blood Test Normal. Cancer?
It is understandable to be concerned.
CEA stands for carcinoembryonic antigen.Although originately thought to be found in in the fetus and in cancer tissues, subsequent studies demonstrated that it or a similar molecule can be found in healthy tissues though at much lower levels than in persons with cancer.
The reference ranges for this blood test can vary from lab to lab.
Though most persons would quote less than 2.5 as normal for non smokers and less than 5 for smokers, studies have shown that 95% of normal persons have levels less than 5.
Levels greater than 10 are said to indicate the possibility of cancer but the test is not recommended to be used as a tool to screen a person for cancer.
The reason for this :CEA , which can rise in non cancer conditions, if not good enough to distinguish between cancer and non cancer.
It's main use is monitoring a person who has been diagnosed with cancer to check their response to treatment.
Your value, though higher than the value quoted by most labs, in unlikely to be related to cancer.
If you remain concerned you can have your doctor repeat the tests to observe any trend.
I hope this helps you, please feel free to ask any other questions