RT Journal Article SR Electronic T1 The determination of 3-methoxy 4-hydroxy mandelic acid in urine JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 502 OP 504 DO 10.1136/jcp.14.5.502 VO 14 IS 5 A1 Woiwod, A. J. A1 Knight, R. YR 1961 UL http://jcp.bmj.com/content/14/5/502.abstract AB A simple and accurate method for determining 3-methoxy 4-hydroxy mandelic acid in urine is described. The amounts excreted in urine in 24 hours by nine normal subjects and three patients with phaeochromocytoma have been determined.