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Tricyclic Antidepressants ID and Quantitation
Test CodeTRIID
Alias/See Also
17482
CPT Codes
80337, 80338, 80332 (HCPCS: G0480)
Includes
Amitriptyline, Nortriptyline, and Total
Imipramine, Desipramine, and Total
Doxepin, Nordoxepin, Total, and Grand Total
Clompiramine, Desmethylclomipramine, and Total
Imipramine, Desipramine, and Total
Doxepin, Nordoxepin, Total, and Grand Total
Clompiramine, Desmethylclomipramine, and Total
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 Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 8 hours
Refrigerated: 5 days
Frozen: Not established
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
Setup Schedule
Monday-Saturday Morning Report available: 4 Days after receipt at the performing laboratory. Add two (2) days for transport.
Reference Range
See Laboratory Report
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Last Updated: June 22, 2023