Specimen Requirements
Title
Doxepin, Sinequan (Includes Nordoxepin)
Specimen Requirement
1 Red Top/serum or Lavender/plasma. Do not collect in serum separator tube. After 30 minutes of clotting, promptly centrifuge to separate and send 1.0 mL serum or plasma in a screw-capped plastic vial. PLEASE indicate serum or plasma on the transport tube. Collect just before next dose.
Methodology
Stability
Room Temperature 48 hours, Refrigerated 14 days, Frozen 14 days
Reference Range
By Report*
Turnaround
2-3 days
Clinical Use
Evaluate toxicity; monitor therapeutic levels
Test Code
DOXW