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Gabapentin
Test Code3557X
CPT Codes
80171
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
Draw sample 2 hours after last dose
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube or lithium heparin (green-top) tube
Instructions
Do not use gel barrier/Serum Separator tubes. Separate serum or plasma from red cells as soon as possible; pipette or pour into plastic transport tubes.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 5 days
Refrigerated: 12 days
Frozen: 30 days
Refrigerated: 12 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Gel barrier/Serum Separator Tube (SST®)
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Tues-Sat; Report available: 2-4 days
Clinical Significance
Gabapentin is an anticonvulsant drug commonly used as adjunctive therapy to treat partial seizures. Therapeutic drug monitoring is useful to optimize dose and to avoid toxicity.
