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) (-) Urine (1) Test Area Therapeutics (2) Test Category Acids (2) Alcohols (2) Analgesics (2) Anesthetics (2) Antiarrhythmics (2) Anticholinergics (2) Antidepressants (4) Antidiabetics (2) Antiepileptics/Antiseizures (14) Antihistamines (1) Antimigraines (2) Antineoplastics (1) Antiparkinsons (1) Antipsychotics (10) Antirheumatics (1) Biomarkers (3) (-) Bronchodilators (2) Cholinesterase Inhibitors (3) Diuretics (2) Hallucinogens (2) Hypoglycemic Agents (1) Immunosuppressants (2) Metals/Elements (2) Muscle Relaxants (1) Opiates/Opioids (2) Other (2) Pesticides/Insecticides (2) Sedative/Hypnotics (7) Solvents (5) Terpenes (2) Vasodilators (4) Volatiles (5) Test Sub-Category Beta-2 Andrenergic Agonists (1) (-) Other (2) Test Test Name 4387SP Theophylline, Serum/Plasma 4387U Theophylline, Urine