Turnaround Time: 8 - 15 days
CPT Code:


Test Type: Frozen Plasma
Stability Time:

14 days


Use: Plasma 5-hydroxy-indoleacetic acid (5HIAA or 5-HIAA) is a metabolite of serotonin that can be elevated as a result of carcinoid tumors/carcinoid syndrome.

Limitations: This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Methodology: High-pressure liquid chromatography (HPLC)/tandem mass spectrometry

Collection Details:

Patient Preparation:

Avoid bananas, avocados, plums, eggplant, tomatoes, plantain, pineapple, walnuts, and interfering drugs for a 72-hour period prior to and during collection.


Collection Instructions:

Specimen: Plasma, frozen

Volume: 1.0 mL

Minimum Volume: 0.5 mL

Container: Green-top (heparin) tube or lavender-top (EDTA) tube

Storage Instructions: Freeze