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Serotonin, Blood
MessagePatient should avoid food high in indoles such as avocado,
banana, tomato, plum, walnut, pineapple and eggplant. Patient
should also avoid tobacco, tea and coffee three days prior to
specimen collection.
Instructions
Serotonin kit (provided by Quest Diagnostics Chantilly): Draw
one 4 mL (lavender-top) tube, and transfer immediately to a plastic
bottle containing 35 mg Ascorbic Acid. Mix well, freeze at -20 C or
colder, and send frozen samples on dry ice.
Test Code
CPT Codes
84260
Preferred Specimen
4 mL whole blood (See Instructions)
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.
Minimum Volume
1.0 mL
Instructions
1. Draw blood into the EDTA 7.2-mg 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 Container
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable Refrigerated: Unacceptable
Frozen: 42 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature – Received refrigerated
Methodology
High Performance Liquid Chromatography (HPLC) – Fluorescence Detection
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 FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Setup: Mon – Fri a.m.
Report Available
Report Available – 2 Days
Reference Range
56 – 244 ng/mL
Clinical Significance
Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153
Last Updated: February 17, 2023