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 (1) (-) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Analgesics (2) Anesthetics (2) Antiarrhythmics (4) Anticholinergics (2) Antidepressants (3) Antidiabetics (4) Antiepileptics/Antiseizures (15) Antihistamines (2) Antimigraines (2) Antineoplastics (2) Antipsychotics (10) (-) Antirheumatics (2) Bronchodilators (2) Cholinesterase Inhibitors (2) Diuretics (4) Hallucinogens (2) Hypoglycemic Agents (2) Immunosuppressants (7) Muscle Relaxants (2) Opiates/Opioids (2) Other (1) Pesticides/Insecticides (2) Sedative/Hypnotics (6) Vasodilators (6) Test Sub-Category (-) Other (2) Test Test Name 4489B Tofacitinib, Blood 4489SP Tofacitinib, Serum/Plasma