Chromogranin A (CgA) (carcinoid)

The Chromogranin A analysis is a valuable tool in diagnosing neuroendocrine tumors. Timely analysis and proper interpretation of the results can enable prompt intervention and reduce the risk of serious health complications. To learn more about this analysis or to schedule it, visit our IntroLab laboratory in Belgrade.

What is Chromogranin A (CgA) (carcinoid)?

Chromogranin A (CgA) is a protein found in neuroendocrine cells, which are present in various parts of the body. These cells can form neuroendocrine tumors, and when they do, they usually release increased amounts of CgA into the bloodstream.

Why is measuring Chromogranin A important?

The Chromogranin A (CgA) (carcinoid) analysis is especially important for individuals suspected of having neuroendocrine tumors. This marker analysis can provide key information about whether a person has this type of tumor, as well as about its size, growth rate, and extent of spread.

When is this test needed?

Testing for Chromogranin A is recommended for individuals who exhibit symptoms that may indicate the presence of neuroendocrine tumors, such as skin flushing, diarrhea, difficulty breathing, feelings of weakness, palpitations, and sudden drops in blood pressure. Additionally, the test is recommended for individuals with a family history of neuroendocrine tumors, as well as those already undergoing treatment for these tumors, to monitor the success of the therapy.

How are the results interpreted?

The results of the Chromogranin A analysis are interpreted according to reference values. Elevated levels may indicate the presence of neuroendocrine tumors, while low values typically do not carry special diagnostic significance. The analysis results are not absolute proof of the presence or absence of tumors but can assist in diagnosis, together with other clinical findings and results of additional tests.