Chromogranin A

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Also known as: CgA
Formal name: Chromogranin A

At a Glance

Why Get Tested?

To help diagnose and monitor carcinoid tumours and other neuroendocrine tumours

When to Get Tested?

When you have symptoms suggestive of a carcinoid tumour such as flushing, diarrhoea, and/or wheezing. When your doctor thinks you may have a carcinoid or other neuroendocrine tumour

Sample Required?

A blood sample taken from a vein in your arm

Test Preparation Needed?

You may be required to fast overnight prior to the specimen being taken and to temporarily discontinue certain medication beforehand. Please check the local laboratory instructions with your doctor prior to blood being taken.