homovanillic acid /ho·mo·va·nil·lic ac·id/ (ho″mo-vah-nil´ik) a major terminal urinary metabolite, converted from dopa, dopamine, and norepinephrine.
homovanillic acid
homovanillic acid (hō´mōv
nil´ik),
homovanillic acid
ho·mo·va·nil·lic acid (h  m-v -n l k, h m-)n. A dopamine metabolite occurring in human urine. |
homovanillic acid
[hō′mōvənil′ik]
an acid that is produced by the normal metabolism of dopamine and that may occur at an elevated level in urine in association with tumors of the adrenal gland. Its normal accumulation in a 24-hour collection urine sample is 15 mg.
homovanillic acid (hō´mōv
nil´ik),n an acid that is produced by normal metabolism of dopamine and may be elevated in the urine in association with tumors of the adrenal gland.
homovanillic acid
HVA Physiology A major dopamine metabolite used to synthesize epinephrine and norepinephrine and excreted in urine; HVA is usually measured with the major catecholamines and other catecholamine metabolites; HVA is ↑ in
neuroblastoma and ganglioneuroma Ref range 0-15 mg/24 hr urine. See Hypertension, Pheochromocytoma.
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