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5-HIAA

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Overview

Risks

Results

5-HIAA

Alternative Names:

HIAA; 5-hydroxyindole acetic acid; Serotonin metabolite
Normal Values:

The normal range is 3 to 15 mg/24 hr (milligrams per 24 hours)

What abnormal results mean:

5-HIAA levels are usually measured to detect carcinoid tumors and follow the clinical course of patients, and to diagnose certain medical conditions such as systemic mastocytosis and endocrine tumors.

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