Leflunomide Metabolite

Test ID: Z5361

CPT code: 80299
LOINC: 44828-2
Specimen Type: Red gel or nongel
Frequency: Setup: Sun, Wed; Analytic time 2 days
Instructions: 1mL serum from red or gel clot tube, ambient. Centrifuge within 2 hrs.
Draw at least 12 hrs post dose.
Text: Leflunomide is in a class of medications called disease-modifying
antirheumatic drugs (DMARDs). It works by decreasing inflammation and
slowing the progress of the condition, which can help improve the
physical activity of people with rheumatoid arthritis.
Methodology: High Turbulence Liquid Chromatography-Tandem Mass Spectrometry
(HTLC-MS/MS).

Test Name


AMS Laboratory

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