Serotonin, Serum : 1015179

Test Code
SEROTQ or 1015179

Alias/See Also
5-Hydroxytryptamine, Serotonin

CPT Codes
84260

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

Serum separator tube or plain red.

Transport Container
Centrifuge the serum separator tube or plain red and aliquot 2 mL serum (Min: 1 mL) into a standard transport tube. Freeze within 2 hours of collection.

Transport Temperature
Frozen.

Specimen Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 42 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature or refrigerated.

Methodology
High Performance Liquid Chromatography

Setup Schedule
Monday & Wednesday & Friday

Report Available
3-6 days (From receipt at performing laboratory)

Reference Range
56-244 ng/mL

Clinical Significance
Serotonin concentrations are greatly increased in patients with carcinoid syndrome. Carcinoid tumors are associated with multiple endocrine neoplasia (MEN) types I and II. These tumors are associated with flushing, diarrhea, pain,and other symptoms.

Performing Laboratory
Quest Diagnostics



The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.