What tumor marker is CA199?

Nov 14, 2024 Source: Cainiu Health

Dr. Qi Zhirong

Introduction

CA19-9 refers to carbohydrate antigen 19-9, a tumor marker associated with gastrointestinal cancers. It is important to pay attention to one's health, undergo regular medical check-ups and screenings to detect and address any abnormalities promptly. Additionally, maintaining healthy lifestyle and dietary habits is a key approach to preventing digestive system diseases.

Generally, CA19-9 refers to carbohydrate antigen 19-9, a tumor marker for gastrointestinal cancers. The detailed analysis is as follows:

Carbohydrate antigen 19-9 is an acidic glycosphingolipid containing sialic acid. It is typically formed from the precursor of Lewis antigens under the combined action of sialyltransferase and fucosyltransferase. It is primarily used in the diagnosis and monitoring of digestive system tumors such as pancreatic cancer, cholangiocarcinoma, and colorectal cancer. Carbohydrate antigen 19-9 has high sensitivity in pancreatic cancer; most patients with pancreatic cancer show significantly elevated levels of this marker in blood. It also shows a certain positive rate in other gastrointestinal tumors including cholangiocarcinoma, colorectal cancer, liver cancer, and gastric cancer. However, elevated levels of carbohydrate antigen 19-9 may also occur in some benign conditions. Therefore, results of carbohydrate antigen 19-9 testing should be interpreted in conjunction with clinical symptoms and findings from other diagnostic tests.

It is important to pay attention to one's health status, undergo regular physical examinations and screenings to detect and manage abnormalities early. Additionally, maintaining healthy lifestyle and dietary habits is a key approach to preventing gastrointestinal diseases.

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