5-Hydroxyindoleacetic Acid (5-HIAA)

How to Cite This Chapter: Don-Wauchope A, Chetty VT, Ivica J, Kavsak P, Khan WI, Lafreniere M, Nouri K, Solnica B. 5-Hydroxyindoleacetic Acid. McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.1269.3.7.164. Accessed April 24, 2024.

Last Updated: May 9, 2022

Last Reviewed: May 9, 2022

Chapter Information

For a brief introduction and guide to abbreviations, see Laboratory Tests: General Remarks.

Analyte [material]

5-Hydroxyindoleacetic acid (5-HIAA) [U24h]

Reference range, target level, or decision threshold

<0.05 mmol/24 h (10 mg/24 h)!!!

Interpretation of results

↑ Carcinoid

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5-Hydroxyindoleacetic Acid (5-HIAA)

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