Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
NEURO      Geisinger Epic Procedure Code: 80171         Geisinger Epic ID: 43553

Specimen type:
Plasma (preferred) or serum.
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
6 mL dark blue-top (trace element, no additive) tube
6 mL dark blue-top (K2 EDTA) tube
4 mL green/green-top (sodium heparin) tube
3 mL green/black top lithium heparin tube
Specimen required:
3 mL aliquot of plasma or serum; minimum 1 mL.
Special notes:
Do not use gel barrier tubes.
Patient preparation:
Draw sample two hours after last dose at steady state.

Specimen processing instructions:
Centrifuge blood at 15-30 degrees C and 2000-2200 rpm (800-1000 x g) for 5-6 minutes. Separate plasma from cells as soon as possible. Separate plasma from red cells; pipette or pour plasma into polypropylene or polyethylene tubes. 
Transport temperature:
Room temperature (preferred). Refrigerated or frozen specimens also acceptable.
Specimen stability:
Room Temperature: 5 days. Refrigerated: 12 days. Frozen: 30 days.
Rejection criteria:
Stability limits exceeded. Specimen collected in gel barrier tube.

Reference interval:
See laboratory report.
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Neurontin (gabapentin) level.
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Quest test code 3557

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday-Friday morning    
Performed stat? No
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