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 Acids (2) Alcohols (2) Analgesics (11) Anesthetics (6) Antacids (2) Antiarrhythmics (4) Anticholinergics (2) Antidepressants (23) Antidiabetics (6) Antiepileptics/Antiseizures (18) Antihistamines (2) Antihypertensives (14) Antimicrobials (12) Antimigraines (2) Antineoplastics (2) Antiparkinsons (5) Antipsychotics (16) (-) Antirheumatics (2) Antithrombotics (3) Biomarkers (6) Bronchodilators (3) Cholinesterase Inhibitors (4) Decongestants (2) Depressants (2) Diuretics (4) Hallucinogens (2) Hypoglycemic Agents (2) Immunosuppressants (7) Metals/Elements (26) Muscle Relaxants (2) NPS/Designer Drugs (3) Opiates/Opioids (2) Other (3) Pesticides/Insecticides (3) Sedative/Hypnotics (16) Solvents (5) Stimulants (4) Sympathomimetic Amines (2) Terpenes (1) Vasodilators (6) Volatiles (6) Test Sub-Category Other (2) Test Test Name 4489B Tofacitinib, Blood 4489SP Tofacitinib, Serum/Plasma