Levetiracetam, serum or plasma

Alphabetical Test listing

Levetiracetam, serum or plasma-994

Order only if the patient has taken bivaracetam within the past 48 hours

Test name:

Levetiracetam, serum or plasma

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Keppra

Useful for:

This test is only for patient’s that have taken bivaracetam within the past 48 hours.

If bivaracetam hasn’t been taken, order the Levetiracetam (8454/LAB8454) assay.

Specimen type:

Serum

Collection container:

Red serum vial/tube - 5 mL

Volume:

1.0 mL

Minimum volume:

0.2 mL

Processing instructions:

Allow sample to clot
Spin
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within two (2) hours of sample collection

Transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Alternate specimen type:

Heparin plasma
EDTA plasma

Alternate collection container:

Dk green heparin (Li or Na), no gel

Lavender (EDTA), 4mL

Alternate collection instructions:

Immediately after collection, mix tube thoroughly by gentle inversion, 8 - 10 times, to prevent clotting

Alternate processing instructions:

Spin
Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as the appropriate plasma type, within two (2) hours of sample collection

Transport and stability:

Ambient (preferred) – 14 days

Refrigerated – 14 days

Frozen – 105 days

Freeze/thaw cycles - Stable x3

Reason for rejection:

Specimens collected in gel-barrier tubes

Performing lab:

LabCorp Burlington (716936): R-NX

Days set up:

Mo - Sa

TAT:

4 days

Method:

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Reference ranges:

10 − 40 μg/mL

CPT codes:

80177

Date created:

02/14/2020

Revised date:

04/08/2022

Review date:

04/06/2022