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CEA (Carcinoembryonic Antigen)

Carcinoembryonic Antigen (CEA) test is a valuable tool widely used in diagnosing and monitoring certain types of cancers. CEA is a type of protein molecule that can be produced in many parts of the body, most commonly in tissues of a developing fetus. The production of CEA stops before birth; thus, levels in adults can be a sign of cancer.


  • Test NameCEA (Carcinoembryonic Antigen)
  • Sample TypeBlood
  • Preparations RequiredNo specific preparations such as fasting or water restrictions are required before the test.
  • Report Time4 hours

CEA levels can rise in certain types of cancer, making it a useful biomarker, particularly in colorectal cancer. However, it's important to note that CEA can also rise in non-cancerous conditions and not all types of cancers cause a rise in CEA. This guide will address some common questions about the CEA test.

Home Sample Collection Process
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Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
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Reporting of the sample at lab
Reporting of the sample at lab
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Frequently Asked Questions

The CEA test helps diagnose and manage certain types of cancers, especially colorectal cancer. It can be used to monitor the treatment response, detect recurrence, and in some cases, used for early detection of cancer.

No, fasting is not necessary for the CEA test.

No specific preparation is required for this test. However, it's essential to inform your doctor about any medications, supplements, or ongoing treatments, as certain substances might affect the test results.

Your doctor may recommend a CEA test if you have symptoms that suggest cancer, especially colorectal cancer. If you're undergoing cancer treatment, the test may be done regularly to monitor your response to treatment.

The test measures the level of CEA in your blood. An elevated CEA level could suggest the presence of certain types of cancers, although other non-cancerous conditions can also cause a rise in CEA.

The frequency of the CEA test varies based on your specific situation. If you're undergoing treatment for cancer, your doctor may order the test regularly to track your response to therapy.

Normal values for CEA usually range from 0 to 2.5 micrograms per liter (mcg/L), or 0 to 5 mcg/L in smokers. However, normal ranges may vary slightly among different laboratories.

There are no special precautions needed before the test. However, you should inform your doctor about any medication, dietary supplement, or ongoing treatment that you are on.

Smoking and certain medications can increase CEA levels. It's crucial to inform your doctor if you smoke or take any medication.

Certain non-cancerous conditions such as inflammatory bowel disease, pancreatitis, and liver disease can elevate CEA levels. Age and genetics can also influence the results.

If your test shows an abnormal result, you should consult an oncologist. They can interpret your results and guide you on the next steps.

While the CEA test is most commonly used to monitor colorectal cancer, elevated levels can also indicate other types of cancer such as lung, breast, thyroid, and ovarian cancer. However, an elevated CEA alone can't make a definitive diagnosis. Further tests are needed.

The sample for this test is collected through a standard blood draw.

Yes, you can take this test during pregnancy. However, it's important to inform your doctor about your pregnancy status before any test or procedure.

The risks are minimal and related to the blood draw procedure. These could include slight pain, bruising, or infection at the needle site.

While foods do not typically affect the test results, certain medications may influence CEA levels. It's essential to inform your doctor about any medication you're taking.

The test involves a standard blood draw, which may cause slight discomfort or pain at the puncture site.

No, stress does not typically affect CEA levels.

This test can be performed as an outpatient procedure or during a hospital stay, depending on your health situation and doctor's recommendation.

Results are typically available within 1 to 2 days, but the timing may vary depending on the laboratory.

The CEA test is an essential tool in managing certain types of cancer. By working closely with your doctor and regularly monitoring your CEA levels, you can make informed decisions about your treatment and overall health. Always feel free to ask your doctor about any concerns or questions you may have regarding your condition, the CEA test, or the interpretation of your results.

CARCINO EMBRYONIC ANTIGEN (CEA), FLUID
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