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Test Code
GABA
Test Name
Gabapentin, Serum
CPT Codes
80171
Expected Turnaround Time
3 - 5 days
Clinical Utility
  • Identification and quantitation of Gabapentin. 
  • Pharmacokinetics of gabapentin vary widely among patients, particularly those with compromised renal function.
  • Adverse effects may include somnolence, dizziness, ataxia and fatigue.
Specimen and Container Info

Preferred Specimen Type:  Serum

Preferred Collection Container: Red Top, Plain

Desired Specimen Volume: 1 mL
Collection Instructions

 Collect at trough level, immediately prior to next dose.
Processing and Submission Instructions
  1. Allow specimen to sit upright 30 minutes.
  2. Centrifuge for 5 minutes at 3000 rpm within 2 hours of collection.
  3. Transfer serum to plastic vial and refrigerate.
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

48 hours

Refrigerated

14 days

Frozen

30 days
Causes for Rejection

Specimens collected in separator tubes will be rejected.  
Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Intervals

Analyte

Therapeutic Range (µg/mL)

Gabapentin

2.0 - 20.0

 
Performing Location
Roble Road Core Laboratory
Alternate Names
  • Neurontin
  • Gabarone
  • Gabbies
Testing Schedule
Routine, 3 times per week
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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