LEFLU
Leflunomide
EPIC Test Procedure Code: LAB3358
Synonyms:
Arava
Leflunomide Metabolite
A77 1726
Performing Lab:
Referral Laboratory
Required Patient Info:
Labcorp discontinued this test. Ref Lab will change order to Mayo Misc.
Container Type:
Plain red top tube or serum gel
Specimen Type:
Serum
Preferred Volume:
1 mL
Minimum Volume:
0.3 mL
Collection Procedure:
1. Draw blood no sooner than 12 hours (trough value) after last dose.
2. Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.
Specimen Processing:
The serum must be separated from the cells within 2 hours of collection and transferred to a plastic transport tube.
Store and Transport:
Ambient
Stability:
Frozen - 28 days
Refrigerated - 28 days
Room temperature - 28 days
CPT Codes:
80193 - Leflunomide Metabolite Arava (EAP 30021031)
(If billing Medicare, use G0480)
Method:
High-Turbulence Liquid Chromatography Mass Spectrometry (HTLC-MS/MS)