Days Set Up
Thursday
Analytic Time

4 hours

MiChart Code
Amitriptyline and Nortriptyline Level
Soft Order Code
AMTRP

Test Updated:

Synonyms

Elavil
Endep
Etrafon
Triavil
Tricyclics, Amitriptyline and Nortriptyline
AMITRIPTYLINE/NORTRIPTYLINE LV
AMITRIPTYLINE RESULT
NORTRIPTYLINE RESULT
AMITRIPTYLINE/NORTRIPTYLINE
AMIT
NORT2
AMITRIPTYLINE
NORTRIPTYLINE

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All specimens should be accompanied by a requisition.

Submitting Specimens

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MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)

Test Usage

Monitor therapeutic drug levels; monitor patient compliance; evaluate amitriptyline toxicity.

Reference Range

Therapeutic: 120-250 ng/mL; Toxic: > 500 ng/mL (sum of Amitriptyline and Nortriptyline).

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect blood in a red top or green top tube; do not use SST or PST tube. Centrifuge, aliquot serum or plasma into plastic vial as soon as possible and refrigerate.

Red Top Tube
Normal Volume
1 mL serum or plasma
Minimum Volume
0.7 mL serum or plasma

Billing Information

CPT Code
80335
Pro Fee Code
 
LOINC
Z107-3

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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