Zonisamide, Serum

Test Code

ZON

Alias/See Also

Zonisamide

Quest Code
12938

CPT Codes
80203

Preferred Specimen

1 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial

Minimum Volume

0.5 mL

Other Acceptable Specimens

1 mL plasma collected in an EDTA (lavender-top) tube, transferred to a plastic screw-cap vial
1 mL plasma collected in a sodium heparin (green-top) tube, transferred to a plastic screw-cap vial

Transport Temperature

Refrigerated

Specimen Stability

Room temperature: 24 hours
Refrigerated: 14 days
Frozen: 45 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Collection in gel barrier tube

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

Setup Schedule

Monday, Wednesday, Friday a.m.

Report Available

4 days

Clinical Significance

Zonisamide is commonly used as an adjunct together with other conventional anticonvulsants. As multiple drugs are administered, it is important to monitor its level to optimize therapeutic effects, to assure compliance, and to avoid toxicity.

Performing Laboratory
Quest Diagnostics Nichols Institute
Valencia, CA

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.