DOXEPIN

Test Documentation
Components
Includes metabolite Nordoxepin

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 1.0 mL serum (0.5 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA

Rejection Criteria
SST

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Doxepin + Nordoxepin: 100–200 ng/mL
Doxepin + Nordoxepin Toxic:   >500 ng/mL  

Performed
Monday, Wednesday, Friday

Turnaround Time2-3 days
Test CodeDOXEP
CPT-4 Code (s)
80335 (G0480)
LOINC Codes
14705-8

Warde
Medical
Laboratory