Search

Support Feedback

Levetiracetam (Keppra)

Alias:

Keppra

Methodology:

Immunoassay

This levetiracetam (Keppra) immunoassay uses the ARK Diagnostics reagents, which has known cross-reactivity with the drug brivaracetam (Briviact) and may report inaccurate results. Patients transitioning from levetiracetam to brivaracetam or those who are using both medications should not monitor drug concentrations with the ARK Diagnostics assay. These patients should be monitored using a validated chromatographic methodology that distinguishes between drugs to determine drug concentrations.

Performed:

Monday-Friday 8:00a to 10:00p
Saturday-Sunday 9:00a to 5:00p

Analytical Time:

2 hours

Testing Laboratory:

Pathology Laboratory

Laboratory Section:

Core Laboratory

Levetiracetam (Keppra)

Preferred Collection Container:

Red (No Additive)

Also Acceptable Collection Container:

Green No Gel (Lithium Heparin)
Lavender (EDTA)

Collection Information:

Serum (Red top) or plasma (Green or Lavender top). For consistency, using the same specimen matrix for individual patients is a good practice.

Gel separator tubes are NOT acceptable.

Transport Information:

3.0 mL blood

Minimum Sample Volume: Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or reflex testing. In some situations, a minimum specimen volume may result in a QNS (Quantity Not Sufficient) result, requiring a second specimen to be collected.

Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or reflex testing. In some situations, a minimum specimen volume may result in a QNS (Quantity Not Sufficient) result, requiring a second specimen to be collected.

0.5 mL of blood (0.1 mL serum or plasma)

Unacceptable Conditions:

Gel separator tubes.

Stability

Refrigerated Stability:

7 days

Frozen Stability:

4 weeks

Ambient Stability:

Acceptable if sample has been separated from cells.

Levetiracetam (Keppra)

Sunquest Order Code:

LEVET

Epic Number: The test code used to identify this assay in Epic

LAB477

CPT Code:

80177

Levetiracetam (Keppra)

Modified:

1/9/2014 12:34:34 PM