How are normetanephrine and metanephrine measures used to differentiate hereditary etiologies of pheochromocytoma?

Updated: Jul 20, 2020
  • Author: Michael A Blake, MBBCh, MRCPI, FRCR; Chief Editor: George T Griffing, MD  more...
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Eisenhofer et al found that the combination of increased normetanephrine and metanephrine differentiated patients with NF1 and MEN 2 from those with VHL, SDHB mutations, and SDHD mutations in 99% of cases. [10]

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