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5-hydroxyindoleacetic acid |
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5-hydroxyindoleacetic acid /5-hy·droxy·in·dole·ace·tic ac·id/ (-in″dōl-ah-se´tik) a product of serotonin metabolism present in increased amounts in the urine in patients with carcinoid tumors. 5-hydroxyindoleacetic acid [hīdrok′sē·in′dōlē·əset′ik] an acid produced by serotonin metabolism, measured in the blood and urine to aid in the diagnosis of certain kinds of tumors. It commonly rises above normal levels in whole blood in association with asthma, diarrhea, rapid heartbeat, and other symptoms and is elevated in the urine of patients with carcinoid syndrome. Its normal concentration in whole blood is 0.05 to 0.20 g/mL; its normal accumulation in urine after 24-hour collection is 1 to 5 mg. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | |
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Men who had committed murder without
clear premediation had the lowest levels of the breakdown product, known
as 5-hydroxyindoleacetic acid, or 5-HIAA. |
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