|Test Code||METPL / PMET-M|
|Test||METANEPHRINES, FRACTIONATED, FREE, PLASMA|
|Methodology||Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)|
|Description||Useful in the diagnosis and confirmation of pheochromocytoma and for screening of high-risk patients; particularly in patients with resistant hypertension, hypertensive spells, or adrenal masses.
Also useful in examining extraneuronal metabolism of catecholamines
|Specimen||Draw blood in lavender-top (EDTA) tube(s). Spin down as soon as possible to avoid hemolysis and send 1.0 mL (minimum: 0.3 mL) of EDTA plasma FROZEN or refrigerated in a plastic vial. Grossly hemolyzed specimens will be rejected.
|Reference Values||METANEPHRINE, FREE
< 0.50 nmol/L
|Analytic Time||2 Days|
|Day(s) Test Set Up||Monday through Saturday|