Is carcinoembryonic antigen tested by blood draw?
Mar 28, 2023
Source: Cainiu Health
Dr. Qi Zhirong
Introduction
Carcinoembryonic antigen (CEA) is generally tested through blood sampling. CEA is typically present on the surface of cancer cells and may be secreted through the cell membrane into the extracellular environment during cell development, entering surrounding body fluids. Therefore, blood tests can help in tumor screening, differential diagnosis, and treatment response evaluation. However, CEA can also be measured in cerebrospinal fluid, gastric juice, pleural effusion, and other body fluids to monitor treatment efficacy and recurrence of malignant tumors.
Carcinoembryonic antigen (CEA) is generally tested through blood draw, but it can also be examined by other methods. The specific analysis is as follows:
Carinoembryonic antigen is an acidic glycoprotein with embryonic antigen characteristics. It is antigenic and belongs to a relatively common tumor marker. This substance typically exists on the surface of cancer cells derived from endodermal cell differentiation. During cancer development, it may be secreted through the cell membrane into the extracellular environment and then enter surrounding body fluids. Therefore, CEA levels can be assessed via blood tests to assist in tumor screening, differential diagnosis, and treatment efficacy evaluation. However, it can also be measured in cerebrospinal fluid, gastric juice, pleural effusion, ascites, feces, and other samples, which helps monitor treatment response and recurrence of malignant tumors.
If CEA levels are elevated, it is recommended to determine the underlying cause under medical guidance. If the elevation is due to a disease, patients should acknowledge the condition, maintain a positive mindset, and undergo standardized treatment to help improve their prognosis.
