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Pronunciation: nor'met-a-nef'rin

Definition: A catabolite of norepinephrine found, in the serum, urine and some tissues, resulting from the action of catechol-O-methyltransferase on norepinephrine; has no sympathomimetic actions. Used in the diagnosis of pheochromocytoma.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.