Test Code AMITRIPTYLINE Amitriptyline-Quest #423

Important Note

Includes:

Amitriptyline, Nortriptyline and Total

**Serum/gel specimens are NOT acceptable**

Patient Preparation:

Collect at steady-state trough concentration. Specimen should be collected >12 hours after dose.

Preferred Specimen(s):

3 mL serum collected in a red-top tube (no gel)

Alternative Specimen(s)

Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube or lithium heparin (green-top) tube

Transport Container:

Transport tube

Preferred Transport Temperature:

Room temperature

Specimen Stability:

Reject Criteria:

Gross hemolysis • Gel barrier/Serum separator tube (SST)

Quest Diagnostics Nichols Institute

27027 Tourney Road

Valencia, CA 91355-5386