
Normetanephrine is a metabolite of norepinephrine created by action of catechol-O-methyl transferase on norepinephrine. It is excreted in the urine and found in certain tissues. It is a marker for catecholamine-secreting tumors such as pheochromocytoma. ...
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http://en.wikipedia.org/wiki/Normetanephrine

<chemical> A methylated metabolite of norepinephrine that is excreted in the urine and found in certain tissues. It is a marker for tumours. ... Chemical name: Benzenemethanol, alpha-(aminomethyl)-4-hydroxy-3-methoxy- ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973

(nor-met″ә-nef´rin) metabolite of norepinephrine excreted in the urine and found in certain tissues.
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: nōr′met-ă-nef′rin Definitions: 1. 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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http://www.medilexicon.com/medicaldictionary.php?t=61036
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