Leflunomide Metabolite
13 days
High Performance Liquid Chromatography/Tandem Mass Spectrometry(LC-MS/MS)
Accredited Laboratory Partner
Contact Technical Support
Measures the active metabolite (teriflunomide) of leflunomide. Monitors therapeutic levels and potential toxicity in patients with rheumatoid arthritis.
Serum or Plasma
1 mL
Red-Top Tube or Lavender-top (EDTA) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Serum/Plasma must be separated from cells within 45 minutes of collection and transferred to a plastic transport tube.
| Temperature | Period |
|---|---|
| Room temperature | 20 days |
| Refrigerated | 30 days |
| Frozen | 24 months |
Leflunomide Metabolite
13 days
High Performance Liquid Chromatography/Tandem Mass Spectrometry(LC-MS/MS)
Accredited Laboratory Partner
Contact Technical Support
Measures the active metabolite (teriflunomide) of leflunomide. Monitors therapeutic levels and potential toxicity in patients with rheumatoid arthritis.
Serum or Plasma
1 mL
Red-Top Tube or Lavender-top (EDTA) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Serum/Plasma must be separated from cells within 45 minutes of collection and transferred to a plastic transport tube.
| Temperature | Period |
|---|---|
| Room temperature | 20 days |
| Refrigerated | 30 days |
| Frozen | 24 months |