Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type (-) Blood (2) Serum or Plasma (2) Test Area Therapeutics (2) Test Category Antidiarrheals (1) Antiepileptics/Antiseizures (5) Antihistamines (3) Antipsychotics (3) Hallucinogens (4) (-) Immunosuppressants (2) Laxatives (1) Metals/Elements (4) Test Sub-Category (-) Other (2) Test Test Name 2531B Leflunomide as Metabolite (Therapeutic Drug Monitoring), Blood 2532B Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood