Which compounds decrease 24-hour urine levels of metanephrines in screening tests for pheochromocytomas?

Updated: Jul 20, 2020
  • Author: Michael A Blake, MBBCh, MRCPI, FRCR; Chief Editor: George T Griffing, MD  more...
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Answer

Other compounds decrease 24-hour urine levels of metanephrines. These include methyltyrosine, which inhibits tyrosine hydroxylase, the rate-limiting enzyme in catecholamine synthesis, and methylglucamine, which is present in radiocontrast media.


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