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4], tetrahydrobiopterin; THD, tyrosine hydroxylase deficiency; CSF, cerebrospinal fluid; 5-HIAA, 5-hydroxyindoleacetic acid; HVA, homovanillic acid; MHPG, 3-methoxy-4-hydroxy-phenylglycol; and VMA, vanillylmandelic acid.
Determination of vanillylmandelic acid, vanillactic acid, and homovanillic acid in dried urine on filter-paper discs by high-performance liquid chromatography with coulometric electrochemical detection for neuroblastoma screening.
Simple and rapid liquid-chromatographic method for the simultaneous measurement of vanillylmandelic acid and homovanillic acid [Tech Brief].
8) and 10 patients previously diagnosed as having pheochromocytoma [on the basis of high urinary vanillylmandelic acid (VMA) excretion].