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25444 Gabapentin (GABA)

Gabapentin (GABA)
Test Code: GABASO
Synonyms/Keywords
​Gabapentin, Neurontin
Useful For

​Monitoring serum concentration of gabapentin, particularly in patients with renal disease

Assessing compliance

Assessing potential toxicity

Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)​​
​No ​Serum ​Red Top Tube (RTT) ​ ​1 mL ​0.5 mL ​
Collection Processing Instructions
​Draw sample immediately before next scheduled dose.  Spin down within 2 hours of draw and remove from cells.
Specimen Stability Information
Specimen Type ​ ​ Temperature Tim​​e
​Serum ​ ​ ​Refrigerate (preferred) ​28 days
​Ambient
​Frozen
Rejection Criteria
Hemolysis Mild OK; Gross reject​​
Lipemia​ ​Mild OK; Gross reject
​Icterus ​Mild OK; Gross reject
​Other ​Whole blood, plasma or serum gel tube
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentatio​​n
​Mayo Medical Laboratories ​Monday through Sunday ​1 day ​Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
Mayo Clinic Laboratories
Reference Range Information
Performing Location Reference ​​Range
Mayo Medical Laboratores​ ​2.0-20.0 mcg/mL
Interpretation
​Therapeutic ranges are based on specimens drawn at trough (immediately before next dose).
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Com​​ments
80171​ ​ ​1 ​ ​
Synonyms/Keywords
​Gabapentin, Neurontin
Ordering Applications
Ordering Application Description
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)​​
​No ​Serum ​Red Top Tube (RTT) ​ ​1 mL ​0.5 mL ​
Collection Processing
​Draw sample immediately before next scheduled dose.  Spin down within 2 hours of draw and remove from cells.
Specimen Stability Information
Specimen Type ​ ​ Temperature Tim​​e
​Serum ​ ​ ​Refrigerate (preferred) ​28 days
​Ambient
​Frozen
Rejection Criteria
Hemolysis Mild OK; Gross reject​​
Lipemia​ ​Mild OK; Gross reject
​Icterus ​Mild OK; Gross reject
​Other ​Whole blood, plasma or serum gel tube
Useful For

​Monitoring serum concentration of gabapentin, particularly in patients with renal disease

Assessing compliance

Assessing potential toxicity

Reference Range Information
Performing Location Reference ​​Range
Mayo Medical Laboratores​ ​2.0-20.0 mcg/mL
Interpretation
​Therapeutic ranges are based on specimens drawn at trough (immediately before next dose).
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentatio​​n
​Mayo Medical Laboratories ​Monday through Sunday ​1 day ​Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
Mayo Clinic Laboratories
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Com​​ments
80171​ ​ ​1 ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.