What is CEA in colon cancer?
What is CEA in colon cancer?
CEA is a complex glycoprotein produced by 90% of colorectal cancers and contributes to the malignant characteristics of a tumor. It can be measured in serum quantitatively, and its level in plasma can be useful as a marker of disease.
What’s the normal CEA level for colon cancer?
CEA is a protein marker indicative of several types of cancers, especially colon cancer. The CEA normal levels are different for smokers and nonsmokers. Usually, for adult nonsmokers, the normal CEA levels range from 0 to 2.5 mcg/l. For adult smokers, the levels are slightly higher, and normal levels range from 0 to 5.0 mcg/l.
When do CEA levels go back to normal?
Most healthy people have levels below this amount. The level of CEA will usually be normalized between one and four months after the successful eradication of cancer. What is the abnormal CEA level? CEA levels are increased when CEA is higher than 3 ng/ML. This level is considered to be abnormal.
When to take a CEA blood test for cancer?
It is recommended to take the test during the intervals of the therapy and even after the cancer therapy to monitor the condition. A decreasing CEA level means that the body is responding well to the treatment. A stable or increasing CEA level may mean that the tumor is growing.
What does a high CEA level mean after surgery?
Large amounts of CEA in the body after cancer treatment or surgery indicate that the cancer is not lost. This may mean that cancer has spread to other parts of your body. Smoking can increase the amount of CEA in your body even without cancer. You should tell your doctor if you are smoking. When will your doctor perform a CEA test?
The CEA is measured in the blood and the normal range is <2.5 ng/ml in an adult non-smoker and <5.0 ng/ml in a smoker. The most common cancers that elevate CEA are in the colon and rectum but it can be elevated with gastric, ovarian and other cancers.
What does it mean when your CEA level is high?
A CEA (carcinoembryonic antigen) test measures the level of CEA in your blood or other body fluids. High levels can be a sign of cancer. The test is most often used to see if cancer treatment is effective and whether cancer has spread. Learn more.
Can a CEA test be used for colorectal cancer screening?
The poor reliability of this test in early colorectal cancer and the imperfect specificity in the normal population makes this test unsuitable for primary colorectal cancer screening. CEA has been studied extensively as a marker for disease recurrence in patients undergoing curative intent resection of a colorectal cancer primary.
What do you need to know about the CEA test?
Healthy adults should have very little or no CEA in their body. This test measures the amount of CEA in the blood, and sometimes in other body fluids. CEA is a type of tumor marker. Tumor markers are substances made by cancer cells or by normal cells in response to cancer in the body. A high level of CEA can be a sign of certain types of cancers.