Catecholamines Fractionated

Adrenalin®, Norepinephrine, Epinephrine, Dopamine, Noradrenaline

10 days

High-pressure liquid chromatography (HPLC) with electrochemical (EC) detection

Test Includes: Plasma catecholamines, fractionated (dopamine, epinephrine, norepinephrine)

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Measures individual catecholamines (e.g., epinephrine, norepinephrine). Used to evaluate pheochromocytoma.

Plasma

1.5 ml

Lavender-top (EDTA) tube or green-top (heparin) tube

Patient should discontinue drugs and other substances that may affect measured catecholamine results for at least one week before obtaining the specimen

Draw blood in chilled lavender-top (EDTA) tube. Invert to mix with preservatives. Centrifuge and transfer the plasma to a labeled plastic transport tube. Place on-ice immediately (do not refrigerate) and freeze separated plasma within four hours of collection. Important: The patient should be in a fully recumbent position (lying down) for at least 20 minutes before and during sample collection. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.