What is it about?
homovanillic acid is used as a marker of for catecholamine-secreting tumors (including homophaeochromocytoma) - however, the intake of certain plant foods rich in flavonols can lead to non-tumour derived homovanillic acid, and therefore false positives.
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Why is it important?
It is essential to control the diet of patients undergoing this type of investigation through the elimination of flavonol-rich foods
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This page is a summary of: Dietary flavonols contribute to false-positive elevation of homovanillic acid, a marker of catecholamine-secreting tumors, Clinica Chimica Acta, January 2011, Elsevier,
DOI: 10.1016/j.cca.2010.09.037.
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