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Laboratory Test Directory

Amitriptyline and Nortriptyline, Serum


Name Method Department Units
Amitriptyline and Nortriptyline, Serum Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Send Out ng/mL

Battery Members

Amitriptyline, Nortriptyline

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 1 mL

Room temperature - 1 week(s)
Refrigerated - 4 week(s)
Frozen - 4 week(s)

Specimen Preparation

  • Centrifuge within 2 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Collected in tube with gel separator
  • Gross hemolysis
  • Gross lipemia
  • Gross icterus
  • Not centrifuged within time frame
  • Wrong collection tube


Draw specimen immediately before next scheduled dose (minimum 12 hours after last dose).

CPT Code

  • 80335