Methsuximide as Metabolite, Serum/Plasma

Test Code

21361

CPT Codes
80299<br>Restricted Client Code

Includes

Normethsuximide (Methsuximide metabolite)

Preferred Specimen

1 mL serum collected in a red-top tube (no gel)

Minimum Volume

0.3 mL

Other Acceptable Specimens

Plasma collected in: ETDA (lavender-top) tube, or EDTA (royal blue-top) tube, or sodium heparin (green-top) tube, or 3.2% sodium citrate (light blue-top) tube, or ACD-B (yellow-top) tube

Instructions

Promptly centrifuge and separate serum or plasma into a plastic screw-capped vial, preservative-free, using approved guidelines.

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: 7 days
Refrigerated: 30 days
Frozen: 18 months

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

Polymer gel separation tube • Serum separator tube (SST)

Methodology
High Performance Liquid Chromatography (HPLC)

FDA Status
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration.

Setup Schedule

Set up: Varies; Report available: 8 days

Reference Range

None detected

Clinical Significance

Drug level monitoring.

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.