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) (4) Sample Type Blood (4) (-) Serum or Plasma (4) Urine (1) Test Area Therapeutics (4) Test Category Antianxiety (1) Antidiarrheals (1) Antiepileptics/Antiseizures (3) (-) Antihistamines (2) Antihypertensives (1) Antimicrobials (1) Antipsychotics (1) Hallucinogens (1) (-) Immunosuppressants (2) Stimulants (1) Test Sub-Category Other (4) Test Test Name 2517SP Levocetirizine, Serum/Plasma 2525SP Loratadine and Metabolite, Serum/Plasma 2531SP Leflunomide as Metabolite (Therapeutic Drug Monitoring), Serum/Plasma 2532SP Leflunomide as Metabolite (Pre-Pregnancy Monitoring), Serum/Plasma