Catecholamines and Vanillylmandelic Acid (VMA)

Adults
Epinephrine: 0–20 ng/24 hr; SI units: 0–109 nmol/day
Norepinephrine: 15–80 ng/24 hr; SI units: 89–473 nmol/day
Dopamine: 65–400 ng/24 hr; SI units: 424–2612 nmol/day
VMA: <6.8 mg/24 hr; SI units: <35 nmol/24 hr
Children
Epinephrine: 4–10 yrs: <10 ng/24 hr; SI units: <54.6 nmol/day
Norepinephrine: 4–10 yr: 8–65 ng/24 hr; SI units: 47–384 nmol/day
Dopamine: 1–4 yrs: 10–260 ng/24 hr; SI units: 65–1698 nmol/L/day
VMA: 2–18 yr: 1–5 mg/ 24 hr; SI units: <30 nmol/24 hr
. 24-hr urine collection.
■ Used to screen for neuroendocrine tumors including
pheochromocytoma.
■ Test is affected by multiple foods and drugs. Check with lab
about withholding medications or changing diet prior to and
during the test.