II. Indications
- Pheochromocytoma evaluation
III. Technique
- Obtain initial plasma Catecholamines
- Administer oral Clonidine dose
- Recheck plasma Catecholamines after Clonidine
IV. Interpretation
- Catecholamines normally suppressed after Clonidine
- Catecholamines not suppressed in Pheochromocytoma