Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Serum/Plasma Test (2532SP)
||Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Serum/Plasma
||Arava®; Leflunomide Metabolite
||This test is designed for measuring teriflunomide (leflunomide active metabolite) at low levels. This test can be used to monitor the elimination of teriflunomide in women of childbearing potential who discontinue leflunomide. This test is New York State approved.
||High Performance Liquid Chromatography/
TandemMass Spectrometry (LC-MS/MS)
||1 mL Serum or Plasma
||Plastic container (preservative-free)
||Serum: Collect sample in Red top tube
Plasma: Collect sample in Lavender top tube (EDTA) or Pink top tube.
Promptly centrifuge and separate Serum or Plasma into a plastic screw capped vial using approved guidelines.
|Light Protection Required
||Room Temperature: 30 day(s)
Refrigerated: 30 day(s)
Frozen (-20 °C): 1 month(s)
||Polymer gel separation tube (SST or PST).
|Day(s) Test Set-up / TAT
||[LC-MS/MS] Monday-Sunday / 7 days
|Suggested CPT Code
|Test Summary Sheet
*Rejection criteria pertain to clinical specimen submissions only.
**Stated minimum volume allows for a single analysis. Repeat analysis will not be performed.