Chromogranin A

Also known as: CgA
Formally known as: Chromogranin A
Related tests: Serotonin, 5-HIAA, Catecholamines, Tumour Markers

	Common Questions
	1. Should everyone have a Chromogranin A test? 2. How does a doctor locate the carcinoid or neuroendocrine tumour? 3. How does the doctor tell whether a tumour is benign or cancerous? 1. Should everyone have a Chromogranin A test? No. This test is usually requested to help diagnose and monitor a carcinoid or other neuroendocrine tumour, both of which are uncommon. Most people will never need to have this test performed. [Back to top ] 2. How does a doctor locate the carcinoid or neuroendocrine tumour? This is usually done through the use of imaging scans such as X-rays, computed tomography (CT), magnetic resonance imaging (MRI) or nuclear medicine tests. In some cases, surgery is required to find the tumour. [Back to top ] 3. How does the doctor tell whether a tumour is benign or cancerous? They need to perform a biopsy or remove the tumour surgically and look at the tumour cells under the microscope. [Back to top ]

This page was last modified on February 15, 2008.

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