Department
Refer to Testing Lab link
Delphic Registration Code (Alpha Code)
HIAA, UR24
Test Code (Numeric Code)
7224
Laboratory Handling
Registration
Give copy of request form along with urine bottle to Biochemistry. Register UR24 for 24 hour urine collections.
Sample Stability
5 days
Synonyms
5-Hydroxyindole Acetic Acid
5 HIAA
Turnaround Time
1 week
Performed Weekly in LabPlus
Specimen Type
- 24hr Urine
Specimen Requirements
Tube/Container Type:
Preferred
- Acidified 24hr Urine Container
Paediatric Specimen Requirements
Tube/Container Type:
Preferred
- 24hr Urine Container
Pre-testing Requirements
Record on form all drugs patient is using
The following foods and supplements interfere with the test and should be avoided for at least 48, and preferably up to 72 hours prior to and during the urine collection.
- Tryptophan or Hydroxytryptophan containing supplements
- Chocolate
- Walnuts / Hickory nuts
- Pineapple, banana, tomatoes, kiwifruit, plum, avocado, dates, grapefruit
- Eggplant (controversial)
Additional Specimen Information
Collect in 24 hours ACID bottle from NSH Specimen Services 43949 or WTH 46881.
State collection date and time on bottle.
Last updated: 13/11/2026