Disappearance rate of catecholamines, total metanephrines, and neuropeptide Y from the plasma of patients after resection of pheochromocytoma.


BACKGROUND Plasma free metanephrines are a more reliable analyte to measure than catecholamines for the biochemical diagnosis of pheochromocytomas. We hypothesized that the long persistence of total (sulfate-conjugated plus free) metanephrines in the blood might have a significant diagnostic value. METHODS We measured plasma concentrations of… (More)


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