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) Urine (1) Test Area Therapeutics (2) Test Category Acids (1) Alcohols (1) Analgesics (1) (-) Anesthetics (1) Antiarrhythmics (2) Anticholinergics (1) Antidepressants (2) Antidiabetics (2) Antiepileptics/Antiseizures (6) Antihistamines (1) Antimigraines (1) Antineoplastics (1) Antipsychotics (6) Antirheumatics (1) Biomarkers (2) Bronchodilators (1) Cholinesterase Inhibitors (2) Diuretics (2) Hallucinogens (1) Hypoglycemic Agents (1) Immunosuppressants (5) (-) Muscle Relaxants (1) Opiates/Opioids (1) Other (2) Pesticides/Insecticides (1) Sedative/Hypnotics (4) Solvents (3) Terpenes (1) Vasodilators (3) Volatiles (3) Test Sub-Category Barbiturates (1) Non-Barbiturate Sedative Hypnotics (1) (-) Other (2) Test Test Name 4120B Ropivacaine, Blood 4487B Tizanidine, Blood