Test directory: 5-HIAA, Random Urine

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 May 9, 2025.
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.