Gabapentin (Neurontin) Drug Level
| Label Mnemonic: | GBPT |
| Epic code: | LAB3185 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Commercial Mailout Laboratory
6240-8 RCP
356-8593
6240-8 RCP
356-8593
Specimen(s):
Blood
Specimen
Instructions:
Timing of specimen collection: Pre-dose (trough) draw - At steady state
concentration.
Collection Medium:
 |
| Red top tube 5 mL (Clot Activator) |
Minimum:
Preferred Minimum: 1 mL serum
Absolute Minimum: 0.2 mL serum
Absolute Minimum: 0.2 mL serum
Rejection Criteria:
Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS
or ACD solution).
Delivery Instructions:
Deliver to laboratory within 1 hour of collection.Testing Schedule:
Monday, Wednesday-Saturday
Turn Around
Time:
1-4 days upon receipt at reference laboratory
Reference Range:
Therapeutic Range: 2-20 μg/mL Toxic: Not well established
Interpretive Data:
Pharmacokinetics of gabapentin vary widely among patients, particularly those with compromised renal function. Adverse effects may include somnolence, dizziness, ataxia, and fatigue.
Methodology:
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
CPT Code:
80171