5-Hydroxy Indole Acetic Acid (5-HIAA)

BC0162

Synonym(s):
Specimen Container
24 hrs urine container with 15 mL of 50% HCl
(To be obtained from DPLM Client Services)
Specimen Requirement
Urine
24 hrs urine collection


Minimum aliquot volume : 30 mL urine


Total 24 hr urine volume must be clearly indicated
Specimen Storage/Transport
To aliquot urine into sterile container provided by SGH Biochemistry Lab
Orderable as Urgent? No
Turn Around Time
Average: 7 days (3 - 11 days)
Reference Value(s)
-
Testing Laboratory Location SGH
Laboratory Biochemistry
Contact Number 6394 1352
Day and Time Performed
Mon – Fri: 0800 hrs– 1700 hrs
Orderable on CPOE? Yes
Downtime Form

Document Title

Additional Information

Patient Preparation:

1. Patient should abstain from the following at least 3 days prior to and during urine specimen collection:

    1.1 Intake of food which has high content of serotonin like vegetable food, bananas, pineapples, chocolate, walnuts, pecans, kiwi, fruit, plum and avocados 1.1 Intake of food which has high content of serotonin like vegetable food, bananas, pineapples, chocolate, walnuts, pecans, kiwi, fruit, plum and avocados

    1.2 Where medically possible, drugs such as dihydrocaffein acid, p-Coumaric acid, ferulic acid and o-Hydroxybenzoic acid, drugs containing phenotiazines which may potentially interfere with the testing

    1.3 Where medically possible, drug such as Guaifenesin, Glycerol guaiacolate, Mephenesin, Phenacetin, Acetaminophen, Methenamine,Phenothiazine Tranquilizers, Acetic Acid and Levodopa which may induce increase or decrease 5-HIAA production.

 2. If the patient cannot be completely removed from a drug regime, test result should be interpreted with appropriate clinical judgement based on expected physiology response to these drugs.

Change History Notes

  • 28 Jan 2022 12:00 AM

    ​Updated Specimen Requirement, Specimen Storage / Transport and Addtional Information.

  • 28 Jul 2021 12:00 AM

    ​Updated TAT.

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Last Updated - 27 May 2025