Tricyclic Antidepressants ID and Quantitation (TRCEVL)

Test Code

LAB2418

Quest Code

17482

CPT Codes
80337, 80338, 80332 (HCPCS: G0480)

Includes

Amitriptyline, Nortriptyline, Imipramine, Desipramine, Doxepin, Desmethyldoxepin, Clompiramine, Desmethylclomipramine

Preferred Specimen

3 mL serum collected in a red-top tube (no gel)

Patient Preparation
Collect at steady-state trough concentration. Specimen should be collected >12 hours after dose.

Minimum Volume

1.5 mL

Other Acceptable Specimens

Serum collected in: No additive, no preservative (royal blue-top) tube • Plasma collected in: EDTA (lavender-top) tube or lithium heparin (green-top) tube

Transport Container

Transport tube

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 8 hours
Refrigerated: 5 days
Frozen: Not established

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Gel barrier/Serum separator tube (SST)

Methodology
Chromatography/Mass Spectrometry

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

Mon-sat

Reference Range

See Laboratory Report

Performing Laboratory

Quest Diagnostics Nichols Institute-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.