This test is used to detect the neuroendocrine cancers. Human chromogranin A is an amino-acid. It is a protein produced by neuroendocrine cells. This test is used as a maker of immuno-histochemical analysis for normal and neoplastic neuroendocrine tissues. This test is ordered when a healthcare practitioner suspects the symptoms of carcinoid tumor or neuroendocrine tumor other signs may include appearance of deep red rash, flushing of the face and neck.
LabEspy recommends Ulta Lab Tests, Walk-In Lab, Direct Labs for this test.