Serotonin, Blood : 1016181

Test Code
SEROBQ or 1016181

Alias/See Also
 5-Hydroxytryptamine

CPT Codes
84260

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 prior to specimen collection.
 
4 mL whole blood in serotonin kit (Min: 1 mL). (Available from Client Services supply #16568)

Transport Container
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. Draw blood into the EDTA 4 mL Vacutainer tube.
2. After drawing the blood, mix well and immediately transfer all blood to the enclosed container, which contains 35 mg of ascorbic acid.
3. Mix well and freeze immediately.
4. Ship frozen. Expiration date for ascorbic acid container is the same as the EDTA tube provided in the kit.

Transport Temperature
Frozen.

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

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature; Received refrigerated; Whole blood collected in a (lavender-top) EDTA tube without ascorbic acid.

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

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.