General Information

UPHSM LIS Test #: 28710
Testing Time: 3-5 Days
Testing Lab: LabCorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 2.0 (1.0) mL Serum
Temperature: Frozen
Tube Type: Serum
Collection Info:
Collection: Separate serum from cells within 30 minutes of collection and transfer to a plastic transport tube. Serum can be transported at room temperature or frozen. If collecting a frozen sample, transfer to a plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple test on frozen samples, please submit separate frozen specimens for each test requested. Ambient and refrigerated stable 7 days.  Frozen stable 14 days.


Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Clinical Utilities

Serotonin measurement is used in conjunction with urinary 5-hydroxyindoleacetic acid (5-HIAA) and/or serum chromogranin A in the diagnosis of carcinoid syndrome.

CPT Codes


* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.