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) (3) Sample Type (-) Blood (3) Serum or Plasma (3) Test Area Therapeutics (3) Test Category Anesthetics (2) Antianxiety (1) (-) Antidiarrheals (1) Antiepileptics/Antiseizures (3) Antihistamines (2) Antihypertensives (1) Antimicrobials (1) Antipsychotics (2) Hallucinogens (2) (-) Immunosuppressants (2) Metals/Elements (3) Mood Stabilizers (1) Pesticides/Insecticides (1) Stimulants (1) Test Sub-Category Other (3) Test Test Name 2531B Leflunomide as Metabolite (Therapeutic Drug Monitoring), Blood 2532B Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Blood 2533B Loperamide and Metabolite, Blood