Test Directory

Test Code
SERO
Test Name
Serotonin, Whole Blood
CPT Codes
84260
Expected Turnaround Time
4-6 days
Clinical Utility

Serotonin is produced in excess by carcinoid tumors of the enterochromaffin cell usually in the small intestine, appendix or rectum.

Specimen and Container Info

Specimen Type: Whole Blood

Collection Container: Lavender Top (EDTA) and Serotonin Kit

Desired Specimen Volume: 4 mL

Collection Instructions

Proper specimen collection, storage and shipment are critical for Serotonin whole blood analysis. Strict adherence to the following specimen collection instructions will ensure the most meaningful results.

  1. Collect a lavender top (EDTA) tube via venipuncture.
  2. Immediately transfer all whole blood to the serotonin container which includes 35 mg of ascorbic acid.
Processing and Submission Instructions
  1. Mix well and freeze immediately.
Patient Preparation

Patient should avoid foods high in indoles: avocado, banana, tomato, plum, walnut, pineapple, and eggplant.

Patient should also avoid tobacco, tea, and coffee three days prior to specimen collection.

Transport Instructions

Transport to the laboratory frozen. 

Stability Requirements

Frozen

30 days

Methodology
Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)
Reference Intervals

See patient report.

Reference Lab
Quest Diagnostics Nichols Institute
Testing Schedule
Routine, Monday - Saturday