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Elevated carcinoembryonic antigen is caused by conditions such as cancer, pancreatitis, smoking infections and cirrhosis of the liver. The normal level of CEA in an adult that does not smoke is


The normal value for those taking a CEA, or carcinoembryonic antigen, blood test is 0 to 2.5 micrograms per liter, according to MedlinePlus. For smokers, the normal value range is 0 to 5 micrograms per liter.


A CEA test result of 20 nanograms per milliliter or higher is a very high level, according to Healthline. A level this high not only strongly suggests the presence of cancer, it can also mean that the cancer has metastasized, or spread to other parts of the body.


The normal range for carcinoembryonic antigens is 0 to 2.5 micrograms per liter of blood, states MedlinePlus. For smokers, 0 to 5 micrograms per liter of blood is considered normal.


A CEA test, also known as a carcinoembryonic antigen test, is a medical procedure during which the blood levels of the CEA protein are measured, according to WebMD. It is performed on patients who may suffer from cancer of the colon, rectum, lungs, pancreas, ovaries or ...


The normal range for a CEA blood test is 0 to 2.5 micrograms per liter, according to MedlinePlus. For smokers, an acceptable range is 0 to 5 micrograms per liter. This test measures the amount of carcinoembryonic antigen, a protein, in the blood.


Considerations for a carcinoembryonic antigen test include smoking, cirrhosis and other factors that can raise CEA levels in the blood of those who do not have cancer, explains Drexel University College of Medicine. A doctor must order other tests to diagnose the cause ...