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
1. Draw blood into the EDTA 7.2 mg Vacutainer(R) tube.
2. After drawing the blood, mix well and immediately transfer all
blood to the enclosed container, which contains 35 mg of ascorbic
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.
Reported (Analytical Time)
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.
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 three days prior to specimen collection. Preferred Specimen: 4mL Whole Blood submitted in Serotonin Kit (provided by Quest Diagnostics) (see instructions) Stability: Room temperature: Frozen Only, Refrigerated: Frozen Only Transport Temperature: Frozen Reject Criteria: Received room temperature; Received refrigerated; EDTA (lavender-top) collection without Ascorbic acid. Methodology: High Performance Liquid Chromatography