Mnemonic GABAPEN
CPT 80171
Test Code 3507565
Synonyms Neurontin®
Test Includes  
Specimen Serum
Volume 1.0 mL
Container Red Top Tube. Do NOT use SSTs.
Special Instructions For therapeutic drug monitoring, specimens should be drawn as trough levels.
Specimen Prep Centrifuge* and transfer to a Plastic Transport Tube.
Storage Room Temperature
Transport Temp Room Temperature
Stability Rm Temp 14 days
Stability Refrig 14 days
Stability Frozen 14 days
Methodology Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Rejection Criteria   
Reference Value 4.0 - 16.0 µg/mL 
Performed/TAT Three times per week   Reported in 5-7 days