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Labcorp Oklahoma, Inc.
Test Directory


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Levetiracetam (Keppra)

Order Name LEVETIRACE
Test Number: 3658525
Revision Date 05/28/2021
Test Name Methodology LOINC Code
Levetiracetam (Keppra)
Enzyme Immunoassay 30471-7 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1mL (0.5) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Alternate 1 1mL (0.5) Plasma EDTA (Lavender Top) Refrigerated
Alternate 2 1mL (0.5) Plasma Sodium Heparin (Green Top / No-Gel) Refrigerated
Instructions Do not use Gel separation tubes.
Separate plasma/serum from cells as soon as possible – prolonged presence of whole blood may cause hydrolysis of Levetiracetam.
Stability: Ambient 8 hours, Refrigerated 7 days, Frozen 4 weeks
GENERAL INFORMATION
Testing Schedule Mon - Fri 
Expected TAT 1-3 Days  
Clinical Use Brivaracetam (Briviact) interferes with the measurements of Levetiracetam (Keppra) in the ARK Levetiracetam assay. Serum levels of levetiracetam and/or brivaracetam should be confirmed by a valid chromatographic method if there is a possibility these drugs are co-present in circulation. 
CPT Code(s) 80177
Lab Section Chemistry