Gabapentin : ARUP Lab Tests

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Gabapentin : 0090057

Mnemonic: GABAP

Methodology:	Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed:	Sun-Sat
Reported:	1-3 days
Specimen Required:	Collect: Plain red. Also acceptable: Lavender (K₂ or K₃EDTA) or pink (K₂EDTA). Specimen Preparation: Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution). Stability (collection to initiation of testing): After separation from cells: Ambient: 5 weeks; Refrigerated: 6 weeks; Frozen: 2 months

Reference Interval: Therapeutic Range: not well established.
Interpretive Data:	The proposed therapeutic range for seizure control is 2-10 µg/mL. Concentrations that exceed 25 µg/mL may contribute to adverse effects. Pharmacokinetics of gabapentin varies widely among patients, particularly those with compromised renal function.
CPT Code(s):	80299
Cross References:	Gabapentin, Free (Gabapentin), Gabarone (Gabapentin), Neurontin (Gabapentin)

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