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Tricyclic Antidepressants ID and Quantitation
Test Code17482
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
Report available: 4 Days
Reference Range
See Laboratory Report
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153