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Test Code
LEFLB
Test Name
Leflunomide
CPT Codes
80193
Specimen and Container Info

Specimen Type: Serum

Alternate Specimen Type: Plasma

Collection Container: Red Top, Plain

Alternate Collection Container: Lavender Top (EDTA)

Desired Specimen Volume: 1 mL
Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within 45 minutes of collection.
  2. Transfer 1 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

30 days

Refrigerated

30 days

Frozen

2 years
Causes for Rejection
  • Polymer gel separation tube (SST or PST)
Methodology
High Performance Liquid Chromatography-Tandem Mass Spectrometry
Reference Intervals

See patient report.
Alternate Names
  • Leflunomide Metabolite
  • DMARD
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Varies
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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