Catecholamines, Fractionated, Plasma LabCorp

The Catecholamines, Fractionated, Plasma test is used to diagnose pheochromocytoma and those paragangliomas which may secrete epinephrine, norepinephrine, or both. Such tumors may cause paroxysmal or persistent hypertension. Investigation of hypertensive patients, especially younger individuals, particularly when hypertension is paraoxysmal, suggesting pheochromocytoma. Plasma catecholaminse with urinary metanephrinse and VMA are a recommended test battery for pheochromocytoma. Others recommend plasma catecholamines when urinary collections are not diagnostic. Work up multiple endocrine adenomatosis, type II. Used also in diagnosis of disorders related to the nervous system and in assessment of resuscitation. 

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