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Normal range: <50 mg/dL

It is the best general neuroendocrine serum marker available. It is very helpful in diagnosing and detecting the following tumors: Carcinoid tumors, pheochromocytoma, gastrinomas, islet cell tumors of the pancreas, medullary carcinoma of the thyroid, small cell carcinoma of the lung and neuroblastoma. It has the highest specificity for the detection of neuroendocrine tumors compared to the other neuroendocrine markers (like NSE). The higher the tumor serum level is, the larger the tumor volume. Its level is important for detecting early recurrence of such tumors

Sample: serum