5-OH indoleacetic acid

Introduction

5-OH indole acetic acid is a breakdown product of serotonin facilitated by MAO.

24 hour urine 5HIAA

Indications

rule out carcinoid syndrome

Reference interval

2-8 mg/day (10-42 umol/dau(

Increases

malabsorption syndromes:

• celiac disease, Whipple's disease (up to 30 mg/day) carcinoid syndrome
• most cases > 100 mg/day

More general terms

• 5-hydroxyindole
• indoleacetic acid
• phenol

Additional terms

• indole metabolism

Database

• PubChem: http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=1826