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Serotonin, Serum
MessageSPECIAL FOOD/ETC GUIDELINES BELOW.
TAKE TO PROCESSING IMMEDIATELY.
ALLOW TO CLOT, CENTRIFUGE AND FREEZE SERUM WITHIN 2 HOURS OF COLLECTION.
TAKE TO PROCESSING IMMEDIATELY.
ALLOW TO CLOT, CENTRIFUGE AND FREEZE SERUM WITHIN 2 HOURS OF COLLECTION.
Test Code
29851
Alias/See Also
LAB121
CPT Codes
84260
Preferred Specimen
2 mL serum
Patient Preparation
Patient should avoid food high in indoles: avocado, banana, tomato, plum, walnut, pineapple, and eggplant.
Patient should also avoid tobacco, tea, and coffee for 3 days before specimen collection.
Minimum Volume
1 mL
Instructions
Spin and freeze serum below -20° C within 2 hours after collection
Transport Container
Transport tube
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 42 days
Refrigerated: Unacceptable
Frozen: 42 days
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Mon-sat
Report Available
3-5 days
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 Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |