found inside neuroendocrine cells, which release
CgA and certain hormones into
the blood. CgA may be
found in higher than normal amounts in patients with
certain neuroendocrine tumors, small cell lung cancer,
prostate cancer, and other conditions. Measuring the amount
of CgA in the blood may help to
diagnose cancer or other conditions or find out how well
treatment is working or if cancer has come back.
CgA is a type of tumor
marker. Also called chromogranin A.