vanillylmandelic acid

vanillylmandelic acid
= VMA
a metabolite of catecholamines excreted in abnormal amounts in the urine in conditions of excess catecholamine production, such as phaeochromocytoma. The measurement of VMA levels in a 24-hour urine sample is still used as a screening test for this condition, although this is being replaced by the direct measurement of urinary catecholamines. Urinary levels may be misleadingly high if foodstuffs with vanillin or the drug levodopa are taken before the test.

The new mediacal dictionary. 2014.

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  • vanillylmandelic acid — Misnomer for 4 hydroxy 3 methoxymandelic acid (α,3 dihydroxy 2 methoxybenzeneacetic acid); the major urinary metabolite of adrenal and sympathetic catecholamines ( e.g., from both epinephrine and norepinephrine); elevated in most patients with… …   Medical dictionary

  • vanilmandelic acid — van·il·man·de·lic acid .van əl man .dē lik n VANILLYLMANDELIC ACID * * * va·nil·man·del·ic ac·id (van″əl man delґik) vanillylmandelic acid …   Medical dictionary

  • Mandelic acid — Mandelic acid[1] IUPAC name 2 Hyd …   Wikipedia

  • 3,4-Dihydroxyphenylacetic acid — IUPAC name 2 (3,4 Dihydroxyphenyl)acetic acid …   Wikipedia

  • 3-methoxy-4-hydroxymandelic acid — See vanillylmandelic acid …   Medical dictionary

  • VMA — Vanillylmandelic acid (Ácido vanililmandélico) Ventilación mecánica asistida …   Diccionario de siglas médicas y otras abreviaturas

  • VMA — • vanillylmandelic acid; • vastus medialis advancement; • ventilator management advisor …   Dictionary of medical acronyms & abbreviations

  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • VMA — Abbreviation for vanillylmandelic acid. * * * vanillylmandelic acid; vastus medialis advancement; ventilator management advisor * * * VMA abbr vanillylmandelic acid * * * see vanillylmandelic acid * * * vanillylmandelic acid …   Medical dictionary

  • Catecholamine — Catechol dopamine …   Wikipedia

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