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Labcorp Oklahoma, Inc.
Test Directory


Index:

Trazodone Level

Order Name TRAZODONE
Test Number: 3638625
Revision Date 11/14/2022
Test Name Methodology LOINC Code
Trazodone Level
Quantitative Liquid Chromatography/Tandem Mass Spectrometry 4064-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1mL (0.5mL) Plasma EDTA (Lavender Top) Refrigerated
Alternate 1 1mL (0.5mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Separate serum or plasma from cells within 2 hours of collection

Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration.
Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).
Stability after separation from cells: Ambient - 12 hours; Refrigerated - 1 week; Frozen - 1 week
GENERAL INFORMATION
Testing Schedule Wednesday only 
Expected TAT 1-8 days after set-up  
Clinical Use Trazodone is indicated for treatment of depression. Also known as: Desyrel. 
Notes Reference Lab: ARUP
Test Code: 3005860
Click Here to view information on the ARUP website.
CPT Code(s) 80338 (G0480)
Lab Section Reference Lab