Plasma Metanephrines Test - Plasma Metanephrine and Normetanephrine Test

Measures the concentration of free metanephrine and normetanephrine (Free Metanephrines) in blood plasma. This test is highly sensitive and is often used as a primary screening or confirmatory test for diagnosing pheochromocytomas and other catecholamine-secreting adrenal cell tumors.