A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Doxepin
Test Code826
Alias/See Also
LAB146
NORDOXEPIN
APONAL
ASAPINE
NORDOXEPIN
APONAL
ASAPINE
CPT Codes
80335 (HCPCS: G0480)
Includes
Doxepin, Nordoxepin 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
Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube, or lithium heparin (green-top) tube
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
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
10: 00 a. M. Tues-sat
Report Available
2-4 days
Reference Range
Total | 110-250 mcg/L |
Clinical Significance
Doxepin is a tricyclic antidepressant. Therapeutic drug levels are monitored to assist the physician assessing therapeutic response and to avoid toxicity.
Performing Laboratory
Quest Diagnostics Nichols Institute-Valencia |
8407 Fallbrook Ave, Suite 100 |
West Hills, CA 91304-3226 |