Test directory: Antidepressants Screen, Urine

Ordering Code 4191
Test Name Antidepressants Screen, Urine
Preferred Specimen Urine
Preferred Container Sterile Container
Optimum Volume 5 mL
Specimen Stability Ambient: 7 Days
Refrigerated: 11 Days
Frozen: 14 Days
Avail. Stat NO
Analytic Time Up to 10 Days
Methodology Gas Chromatography (GC)
Reference Lab  National Medical Services, Inc.

Reference range(s)

The reference ranges listed below are valid on this date of March 27, 2026.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Amitriptyline ALL ng/mL See report.
Nortriptyline ALL ng/mL

Nortriptyline...
Nortriptyline is a metabolite of Amitriptyline and is also available as an independent therapeutic agent

Less than 5% of a given dose is typically excreted as unchanged drug in 24-hour post-dose urine

See report.
Note1
Clomipramine ALL ng/mL See report.
Desmethylclomipramine ALL ng/mL

The plasma...
The plasma concentrations of Clomipramine and metabolite vary widely among patients. The suggested antidepressant range for the sum of Clomipramine plus
Desmethylclomipramine: 200-500 ng/mL plasma

See report.
Note2
Imipramine ALL ng/mL See report.
Desipramine ALL ng/mL

Desipramine is...
Desipramine is a metabolite of Imipramine and is also available as an independent therapeutic agent
24-hour post-dose urine typically contains less than 1% of administered dose

See report.
Note3
Doxepin ALL ng/mL See report.
Desmethyldoxepin ALL ng/mL See report.
Trimipramine ALL ng/mL See report.
Desmethyltrimipramine ALL ng/mL See report.
Fluoxetine ALL ng/mL See report.
Norfluoxetine ALL ng/mL See report.
Protriptyline ALL ng/mL

Substance(s)...
Substance(s) known to interfere with the identity and/or quantity of the reported result: Desmethylsertraline (Sertraline metabolite); Norcyclobenzapine (Cyclobenzaprine metabolite)
See report.
Note4
Maprotiline ALL ng/mL See report.
Trazodone ALL mcg/mL

Approximately...
Approximately 1% of the dose is excreted unchanged within 24 hrs

See report.
Note5
Amoxapine ALL ng/mL See report.
Mirtazapine ALL ng/mL

Analysis by...
Analysis by Gas Chromatography (GC)
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration

See report.
Note6

Note1:


Nortriptyline is a metabolite of Amitriptyline and is also available as an independent therapeutic agent

Less than 5% of a given dose is typically excreted as unchanged drug in 24-hour post-dose urine

See report..

Note2:


The plasma concentrations of Clomipramine and metabolite vary widely among patients. The suggested antidepressant range for the sum of Clomipramine plus
Desmethylclomipramine: 200-500 ng/mL plasma

See report..

Note3:


Desipramine is a metabolite of Imipramine and is also available as an independent therapeutic agent
24-hour post-dose urine typically contains less than 1% of administered dose

See report..

Note4:


Substance(s) known to interfere with the identity and/or quantity of the reported result: Desmethylsertraline (Sertraline metabolite); Norcyclobenzapine (Cyclobenzaprine metabolite)
See report..

Note5:


Approximately 1% of the dose is excreted unchanged within 24 hrs

See report..

Note6:


Analysis by Gas Chromatography (GC)
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration

See report..