GABAPENTIN PLASMA OR SERUM

General Information

HLAB/HOL Code: NEUR
UPHSM LIS Test #: 8990
Schedule: Monday and Thursday
Testing Time: 2 - 4 days
Testing Lab: Warde Medical Laboratories

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 1.0 mL serum
Temperature: Refrigerate
Tube Type: 1 Red Top
Collection Info:
SUBMIT ONLY 1 OF THE FOLLOWING SPECIMENS:
Serum:
1 Red Top/ 1 mL serum (0.5 mL minimum). Do not collect in serum separator tube. Separate and refrigerate serum.
Volume: 1.0 mL plasma
Temperature: Refrigerate
Tube Type: 1 EDTA
Collection Info:
Plasma:
EDTA, Heparin, Flouride, Oxalate
1 mL plasma (0.5 mL minimum). Separate and refrigerate plasma.

Methods

Tandem Mass Spectrometry

CPT Codes

80171

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

Gabapentin (Neurontin) therapeutic range: 2.0-12.0 mcg/mL.
The reported threshold for seizure control is >2.0 mcg/mL which is usually achieved with 1200 mg/day. Dosage up to 3600 mg/day have been safely tolerated.