Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Synonyms
Triavil; Amitriptyline and Metabolite; Limbitrol; Endep; Elavil; Etrafon; Amitril, Amitryptyline
Specimen Type
Serum or Plasma
Performing Lab
Quest Diagnostics Valencia
Epic ID
LAB4026
Lab Test Days
Tuesday-Saturday
Standard TAT
2-4 Days
Collection Information
Specimen Required
3-6 mL Blood
Container Type
Red Top (No Additive)
Collection Instructions
Plasma collected in an EDTA (lavender-top), sodium heparin (dark green-top) or lithium heparin (dark green-top) are also acceptable. Collect at steady-state trough concentration. Specimen should be collected >12 hours after dose.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-Only
Specimen Stability
Room Temp: 5 Days; Refrigerated: 7 Days; Frozen: Not Estabilished
Rejection Criteria
Gross hemolysis; Gel barrier/Serum Separator Tube (SST)
Test Volume Required
3 mL Serum
Minimum Test Volume
1.5 mL Serum
Included Tests
Amitriptyline, Nortriptyline and Total
CPT Codes
80335
Revised
02-09-17
Initials
SL