Last Modified:
10/27/2022 2:10:40 PM
Medical Necessity Documentation:
Client Notes:
If Brivaracetam has been prescribed, order Levetiracetam by GC/MS.
Patient Preparation:
Specimen Requirements:
1.0 mL Serum from a Red Top Tube in a Plastic Vial
Collection Instructions:
Collect as a trough just prior to next dose
Optimum Time to Collect Sample:
0.5 to 1 hour pre-oral dose, trough at steady state (2 weeks after onset of treatment).
Minimum Volume:
0.5 mL
Transport & Storage: Temperature/Stability:
7 days Ambient (Transport)
21 days Refrigerated
30 days Frozen
Avoid Freeze/Thaw cycles
Rejection Criteria:
Serum Separator Tube (SST®) • Specimens collected in any gel barrier tubes • Unspun red-top tube
Reference Range:
6.0-46.0 mcg/mL
Critical Ranges:
Test Comments:
Methodology:
Immunoassay
Clinical Significance:
LEV is currently used as an anti-epileptic drug for the treatment of adult partial seizures particularly as an add-on therapy for refractory patients. It also has potential for other anxiety and cognitive disturbances.
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Turn Around Time:
2 to 3 days
Days Performed:
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed:
Quest - Chantilly
PHL Test Code:
KEPPR
EPIC Test Code:
LAB477
Send Out Test Code:
36330
Alternate Test Names:
Keppra; Levetiracetam (Keppra)
Included Tests:
CPT Coding:
80177
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