Why get tested?
To help diagnose and monitor sarcoidosis and to help distinguish it from other diseases which show similar symptoms

When to get tested?
When you have granulomas (masses of inflammatory cells) that create small bumps under the skin, a lingering cough, red watery eyes and/or other symptoms suggestive of sarcoidosis. When you have active sarcoidosis in order to follow its progress

Sample required?
A blood sample taken from a vein in your arm