OVERVIEW

Purpose: Detection and quantification of gabapentin in urine.

CLINICAL INFORMATION

Gabapentin and pregabalin are anticonvulsant medications prescribed for managing seizures, neuropathic pain, and anxiety. They are occasionally misused for their euphoria effects. Although their recreational use is similar to other central nervous system depressants, such as alcohol and benzodiazepines, it remains less prevalent. The rapid onset of tolerance discourages sustained recreational use, and users may experience withdrawal symptoms. The test is a definitive assay using liquid chromatography mass spectroscopy (LC/MS/MS) methodology.

SPECIMEN COLLECTION

Specimen Type: Random Urine
Preferred Collection Container: Non-sterile specimen container
Specimen Required: 3 mL urine; minimum 1 mL

TEST DETAILS

Methodology: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Compliance Category: Laboratory Developed Test (LDT)
This test was developed and assessed by DMD in compliance with CLIA requirements for its analytical performance characteristics and clinical application. This test has not been cleared or approved by the U.S. Food and Drug Administration.
Reference Interval: Negative
Drug/Metabolite Tested:
Drug/Metabolite Cutoff concentration 500 ng/mL
Gabapentin 1000 ng/mL
CPT code(s): 80355
Turnaround Time: 90% < 48 hours, 50% < 24 hours

SPECIMEN PROCESSING

Transport Temperature: Refrigerated (preferred) or room temperature overnight shipping.
Specimen Stability: 3 days at room temperature and 14 days at refrigerated and frozen temperatures (to be further confirmed with our validation).
Rejection Criteria: Stability limits exceeded.

Director: Cheryl Hanau, MD; Donald Hall Jr., PhD; Garth Ehrlich, PhD; Yinghua Qiu, PhD, DABCC

Review Date: 08/28/2023

Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

The information on these pages is provided for general information only and should not be used for diagnosis or treatment, or as a substitute for consultation with a physician or health care professional. If you have specific questions or concerns about your health, you should consult your health care professional.

 
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