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Clonidine suppression test : Sensitivity and Specificity

Introduction: None written. Excerpt from the entry in Pheochromocytoma:
This is test is used to confirm a positive result of increased catecholamines in plasma or urine.

The clonidine suppression test is used to distinguish between pheochromocytoma and false-positive increases in plasma catecholamines and fractionated metanephrines.

Clonidine suppresses the release of catecholamines from neurons but does not affect the catecholamine secretion from a pheochromocytoma. (UpToDate)

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Accuracy not specified