Specimen Requirements

Title

5-HIAA (5-Dydroxyindole Acetic Acid), Random Urine

Specimen Requirement

Send 15 mL urine in a sterile container, minimum 5 mL.

Patients should not eat avocado, banana, butternut, cantaloupe, dates, eggplant, grapefruit, hickory nuts, honeydew, kiwi fruit, melons, nuts, pecans, pineapple, plums, tomatoes, or walnuts for a 48 hour period prior to start and duration of collection. Could result in falsely elevated 5-HIAA excretion. Medications affecting metabolism of serotonin must be avoided at least 72 hours before and during collection. Patients should also avoid coffee, tea and tobacco. Patient should consult their physician before discontinuing any medication.

Methodology

High Performance Liquid Chromatography

Stability

Room temp: Unacceptable, Refrigerated: 7 days, Frozen: 14 days

Reference Range

BY REPORT*

Turnaround

1-4 days, Performed: Mon-Fri

Clinical Use

Test Code

U5HIR