This test measures the amount of metanephrines that are excreted in the urine over a 24-hour period. Metanephrines are the inactive metabolites of the catecholamines epinephrine (adrenaline) and norepinephrine. The metanephrine test can be used to help detect the presence of pheochromocytomas.
Adjust pH to 1.0 with HCl. Refrigerate during collection.
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