Why is Carcinoembryonic Antigen (CEA) High? Causes, Symptoms, and What to Do

Carcinoembryonic antigen (CEA) is a protein that can be found in higher levels in certain conditions, particularly in some cancers. Understanding why CEA might be elevated and what it means for your health is essential, especially if you've received a test result indicating high levels.

What is Carcinoembryonic Antigen (CEA)?

CEA is a type of protein that is present in the tissues of a developing fetus. In adults, CEA levels are typically low, usually between 0 to 3 nanograms per milliliter (ng/mL). However, for smokers, this range can be slightly higher, up to about 5 ng/mL. CEA is not used as a screening tool for cancer but is primarily used to monitor the treatment of colorectal cancer.

Causes of High CEA Levels

High CEA levels can be caused by several factors, both cancerous and non-cancerous. In cancer patients, elevated CEA is often associated with colorectal cancer but can also be seen in breast, lung, pancreatic, and other cancers. Non-cancerous conditions that might cause elevated CEA include inflammation, infections, liver disease, and smoking. It's important to note that a high CEA level alone does not diagnose cancer but indicates the need for further investigation.

Symptoms Associated with High CEA Levels

High CEA levels themselves do not cause symptoms, but they may be a sign of an underlying condition. Symptoms, if present, are typically related to the condition causing the elevated CEA. For instance, if the elevation is due to colorectal cancer, symptoms might include changes in bowel habits, abdominal pain, or unexplained weight loss. In non-cancerous conditions, symptoms will vary based on the specific disease.

Reading Your CEA Test Result

If your CEA test result shows a level higher than the typical range of 0 to 3 ng/mL (or up to 5 ng/mL if you smoke), it's important to discuss these results with your healthcare provider. They will consider your medical history, any symptoms you might have, and possibly recommend additional tests to determine the cause of the elevated CEA.

Frequently asked questions

What should I do if my CEA level is high? If your CEA level is high, consult with your healthcare provider. They will guide you through the next steps, which might include further testing or monitoring.

Can high CEA levels be lowered? The approach to lowering CEA levels depends on treating the underlying cause. If high levels are due to cancer, treatment of the cancer can help reduce CEA levels.

Is a high CEA level always a sign of cancer? No, high CEA levels are not always indicative of cancer. They can also be elevated due to non-cancerous conditions like inflammation or liver disease.

When to see a doctor

If you receive a test result indicating high CEA levels, it's important to consult your healthcare provider. They can help determine the cause of the elevation and discuss appropriate next steps. Additionally, if you experience any symptoms such as unexplained weight loss, changes in bowel habits, or persistent pain, seek medical advice.

Remember, this information is for educational purposes and should not replace professional medical advice. Always consult with your healthcare provider regarding your health and treatment decisions.