Days Set Up
Analytic Time

2 - 9 days

MiChart Code
Clonazepam and 7-Aminoclonazepam, Sendout
Soft Order Code

Test Updated:


Clonazepam, Serum

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

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

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

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

Test Usage

Therapeutic Drug Monitoring

Reference Range

Clonazepam Anticonvulsant: 20 – 70 ng/mL; Anxiolytic: 4 – 80 ng/mL. Some individuals may show therapeutic response outside of these ranges, or may display toxicity within the therapeutic range, thus interpretation should include clinical evaluation. Note: Therapeutic ranges are for specimens drawn at trough (ie, immediately before next scheduled dose). Levels may be elevated in non-trough specimens.

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

Specimen Requirements

Collection Onsite

Collect specimen in a red top tube; do not use SST tube. Send to Specimen Processing in a green bag

Collection Offsite

Collect specimen in a red top tube; do not use SST tube. Centrifuge within 2 hours, aliquot serum into a plastic vial and refrigerate.

Yellow Top Tube
Red Top Tube
Normal Volume
1.2 mL serum
Minimum Volume
0.6 mL serum

Billing Information

CPT Code
Pro Fee Code

Have More Questions?

Explore our helpful billing resources:

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.