5-hydroxyindoleacetic acid
5HIAA. A breakdown product of serotonin that is excreted in the urine. Serotonin is a hormone found at high levels in many body tissues. Serotonin and 5HIAA are produced in excess amounts by carcinoid tumors, and levels of these substances may be measured in the urine to test for carcinoid tumors. | ||||
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5-hydroxyindoleacetic acid Definition from Encyclopedia Dictionaries & Glossaries
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5-Hydroxyindoleacetic acid
5-Hydroxyindoleacetic acid (5-HIAA) is the main metabolite of serotonin in the human body. In chemical analysis of urine samples, 5-HIAA is used to determine the body's levels of serotonin. 5-Hydroxyindoleacetic Acid (HIAA), Quantitative, 24-Hour Urine
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