Gabapentin QGABA

Specimen Required
Method(s)	Chromatography/Mass Spectrometry
Synonym	Neurontin, Neurotin
Collect	One 6 mL plain red (no gel) top tube. Also acceptable lavender (EDTA), green (sodium heparin) or green (lithium heparin) top tube.
Transport	1 mL serum ambient (Min: 0.5 mL) * Collection Instructions * Separate serum or plasma from red cells as soon as possible; pipette or pour into plastic transport tube. Patient Preparation Draw sample 2 hours after last dose
Stability	Ambient: 5 days Refrigerated: 12 days Frozen: 30 days
Unacceptable Conditions	Gross hemolysis Gel barrier/serum separator tube (SST)

Schedule	Mon-Fri
CPTCode	80171
Notes	Performing Laboratory-Quest Diagnostics-Chantilly VA
Preferred Specimen Collection Device(s)
Plain Red Cap Tube with Clot Activator
Reference Interval
2.7-4.1: (peak) following a single dose of 900-1800 mg/day. 4.0-8.5: (peak) following a multiple dose of 900-1800 mg/day administration. The reference range is evolving. Seizure control has been observed at levels in excess of 4 mcg/mL.