Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood Test (2532B)

Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood Test (2532B)

Analysis Code 2532B 
Test Name Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood 
Test Includes Teriflunomide 
Compound Synonym(s) Arava®; Leflunomide Metabolite 
Purpose 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. 
Category Immunomodulator 
Method(s) High Performance Liquid Chromatography/
TandemMass Spectrometry (LC-MS/MS) 
Specimen Requirements 1 mL Blood 
Transport Temperature Refrigerated 
Specimen Container Lavender top tube (EDTA) 
Special Handling None 
Light Protection Required Not Required 
Stability Room Temperature: 30 day(s)
Refrigerated: 30 day(s)
Frozen (-20 °C): 30 day(s) 
*Rejection Criteria None 
Day(s) Test Set-up / TAT [LC-MS/MS] Tuesday / 3 days 
Suggested CPT Code 80375 
**Minimum Volume 0.45 mL 
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You are viewing Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood Test (2532B)
*Rejection criteria pertain to clinical specimen submissions only.
**Stated minimum volume allows for a single analysis. Repeat analysis will not be performed.


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