Diagnostic Laboratory Services, Inc. : DLS is Hawaii's locally owned clinical and diagnostic testing medical lab

Ordering Code	4157
Test Name	5-HIAA, Random Urine
Alias	5-HIAA (5-Hydroxyindoleacetic Acid)
Preferred Specimen	Urine
Preferred Container	Sterile Container
Other Specimen/Container	Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen.
Optimum Volume	10 mL
Collection Instructions	Patient should avoid food high in indoles: avocados, banana, tomato, plum, walnut, pineapple and eggplant. Patient should also avoid tobacco, tea and coffee three days prior to specimen collection.
Handling Instructions	After urine collection, add 6N HCI to maintain a pH below 3.
Transport Requirements	Oahu: Refrigerated Airline: Refrigerated
Specimen Stability	Ambient: 7 Days Refrigerated: 30 Days Frozen: 30 Days
Avail. Stat	NO
Analytic Time	Up to 10 Days
Methodology	High Performance Liquid Chromatography (HPLC), Electrochemical Detection
Reference Lab	Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 20, 2024.

Component	Age	Male Norm	Male Critical Low	Male Critical High	Female Norm	Female Critical High	Female Critical Low	Units	Add'l info
Creatinine, Random Urine	ALL								See report.
5-HIAA	ALL								See report.