CHROMOGRANIN A

The chromogranin A (CgA) test measures the level of CgA, a protein produced by neuroendocrine cells, in the blood. This test is used to diagnose and monitor neuroendocrine tumors, such as carcinoid tumors, pheochromocytomas, and neuroblastomas. Elevated CgA levels can indicate the presence of these tumors and help assess disease progression and treatment response. The CgA test is valuable for guiding treatment decisions, evaluating therapy outcomes, and monitoring for tumor recurrence in patients with neuroendocrine tumors. It provides important information for managing neuroendocrine diseases and ensuring early intervention.