Lab Test

Clomipramine Level (including Norclomipramine)

Anafranil, Chlorimipramine, Clomipramine Level

Test Codes

Antrim #17155, EPIC: LAB5382, SOFT: CLOMP



Specimen Collection Criteria

Collect: One plain Red-top tube. (Minimum Whole Blood: 2.0 mL)

Do not use Serum Separator Tubes.
Time of Collection:
Trough, just prior to the next dose.
Record the exact time of specimen collection on the tube or in the computer system.

Physician Office/Draw Specimen Preparation

Let specimens clot 30-60 minutes. Centrifuge specimen to separate serum from cells. Refrigerate (2-8°C or 36-46°F) the centrifuged collection tube within two hours of collection. (Minimum: 0.5 mL serum)

Preparation for Courier Transport

Transport: Centrifuged collection tube, refrigerated (2-8°C or 36-46°F). (Minimum: 0.5 mL serum)

Rejection Criteria

  • Serum Separator (SST) tubes.
  • Severely lipemic or hemolyzed specimens.

In-Lab Processing

Let specimens clot 30-60 minutes. Centrifuge specimen to separate serum from cells. Deliver immediately to the appropriate testing station.


Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 24 hours
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 3 months

Specimen Storage in Department Prior to Disposal:

Frozen (-20°C/-4°F or below): 2 months


Royal Oak Toxicology Laboratory


Monday, Thursday.
Results available the same day as testing performed (1-4 days).

Reference Range

Clomipramine + Norclomipramine: 200-800 ng/mL.
Critical Range: Greater than 1000 ng/mL total.

Test Methodology

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

This test was developed and its performance characteristics determined by Beaumont Health. It has not been cleared or approved by the FDA. The Laboratory is regulated under CLIA as qualified to perform high-complexity testing. This test is used for clinical purposes and should not be regarded as investigational or for research.


Tricyclic antidepressants, when present in high concentrations, or when administered to elderly or susceptible populations, may depress cardiac function.

Clinical Utility

Clomipramine is a tricyclic antidepressant drug used primarily to treat obsessive-compulsive disorders. It is also used to treat panic disorders and treatment-resistant depression. This assay is used to monitor the therapeutic drug levels and evaluate the toxicity of clomipramine.

CPT Codes

80335 (alternate: G0480).
LOINC: Clomipramine 3491-8, 45144-3, Norchlomipramine 3536-0, 58013-4, Clomipramine + Norclomipraine 3493-4


Last Updated


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