The normal range is 101-283 ng/ml (nanograms per milliliter)
What abnormal results mean:
Higher-than-normal levels may indicate carcinoid syndrome.
Review Date: 5/17/2005
Reviewed By: Vishal Datta, M.D., Division of Endocrinology and Metabolism, New York Methodist Hospital, Brooklyn, NY. Review provided by VeriMed Healthcare Network.
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