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Lab Test Dictionary

5-HIAA (5-Hydroxyindoleacetic Acid), Random Urine (1648)


High Performance Liquid Chromatography (HPLC)


Carcinoid Screen; 5-HIAA; Serotonin 5-HIAA

Specimen Type

Urine, Random

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

2 Days

Collection Information

Specimen Required

5-10 mL Random Urine

Container Type

Sterile Container

Collection Instructions

Patient should avoid food high in indoles: avocado, banana, tomato, plum, walnut, pineapple and eggplant. Patient should also avoid tobacco, tea and coffee three days before specimen collection.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 7 Days; Refrigerated: 30 Days; Frozen: 30 Days

Test Volume Required

10 mL Random Urine

Minimum Test Volume

5 mL Random Urine

Processing Instructions

After urine collection, add 6N HCl to maintain a pH below 3. Urine without preservative is acceptable if pH is below 6 and the sample is sent frozen.

Included Tests


CPT Codes

82570, 83497