II. Indications

  1. Pheochromocytoma evaluation

III. Technique

  1. Obtain initial plasma Catecholamines
  2. Administer oral Clonidine dose
  3. Recheck plasma Catecholamines after Clonidine

IV. Interpretation

  1. Catecholamines normally suppressed after Clonidine
  2. Catecholamines not suppressed in Pheochromocytoma

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