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) Fluid (1) Serum or Plasma (2) Urine (1) Test Area Therapeutics (2) Test Category (-) Antianxiety (1) (-) Antidiarrheals (1) Antiepileptics/Antiseizures (3) Antihistamines (2) Antihypertensives (1) Antimicrobials (1) Antipsychotics (1) Hallucinogens (2) Immunosuppressants (2) Stimulants (1) Test Sub-Category Benzodiazepines (1) Other (1) Test Test Name 2533B Loperamide and Metabolite, Blood 2535B Lorazepam, Blood