# Carcinoembryonic Antigen (CEA)

> This test measures the level of carcinoembryonic antigen (CEA), a protein found in the blood that is often produced by certain types of tumors. It is most commonly used to monitor the progress of cancer treatment or to check if colorectal cancer has returned after therapy. By tracking changes in these levels, doctors can better understand if a tumor is growing or shrinking. However, this test cannot diagnose cancer by itself or screen the general population, as smoking and other non-cancerous conditions can also cause elevated results.

- Labcorp code: 002139
- Category: [Cancer Detection](https://app.picardo.health/labs/tests/cancer-detection.md)
- Price: shown at checkout, before payment.
- Blood draw: free at a Labcorp location, or $75.00 at home.
- Order link: https://app.picardo.health/labs/order?tests=002139&ref=assistant

## About ordering

A licensed physician reviews every order before any test is run, and results arrive in the person's Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.