What is the CEA test?

Nov 13, 2024 Source: Cainiu Health

Dr. Qi Zhirong

Introduction

Under normal circumstances, CEA refers to carcinoembryonic antigen, a test item for serum tumor markers. Carcinoembryonic antigen is a glycoprotein associated with cell adhesion, composed of sugar and protein, which exists on the surface of cancer cells derived from endodermal cells and serves as a structural protein of the cell membrane. If any discomfort symptoms occur, it is recommended to seek medical attention promptly.

CEA, or carcinoembryonic antigen, is a serum tumor marker test commonly used in clinical practice. If any discomfort occurs, it is recommended to seek medical attention promptly. The detailed explanation is as follows:

Carcinoembryonic antigen is a glycoprotein composed of sugar and protein that is associated with cell adhesion. It is present on the surface of cancer cells derived from embryonic endodermal cells and serves as a structural protein in the cell membrane. CEA testing is primarily performed using chemiluminescent immunoassay or electrochemiluminescent immunoassay. It is commonly used for screening colorectal cancer, gastric cancer, lung cancer, and other malignancies, as well as assisting in determining cancer staging, thereby helping physicians develop more appropriate treatment plans.

When undergoing CEA testing, fasting is recommended. Additionally, maintain a light diet the day before blood collection and avoid consuming greasy or high-protein foods to prevent interference with test results.

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