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 Analgesics (4) Anesthetics (3) Antidepressants (4) Antiepileptics/Antiseizures (3) Antihistamines (1) Antihypertensives (3) Antimicrobials (1) Antineoplastics (1) Antiparkinsons (1) Antipsychotics (6) (-) Antirheumatics (1) Bronchodilators (1) Cholinesterase Inhibitors (1) Diuretics (1) Immunosuppressants (3) (-) Muscle Relaxants (1) Sedative/Hypnotics (3) Stimulants (1) Sympathomimetic Amines (1) Vasodilators (1) Test Sub-Category Other (2) Test Test Name 4487B Tizanidine, Blood 4489B Tofacitinib, Blood