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5-HIAA - Results

Alternative Names

HIAA; 5-hydroxyindole acetic acid; Serotonin metabolite

Normal Values:

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

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

What abnormal results mean:

Abnormal results may be due to:

Tumors of the endocrine system or the digestive tract
Mastocytosis

This list is not all-inclusive.

Reviewed last on: 11/10/2008
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Goldman L, Ausiello D. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:1772.

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