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) (3) Sample Type (-) Blood (2) Serum or Plasma (2) (-) Urine (1) Test Area Therapeutics (3) Test Category Analgesics (1) Stimulants (2) Test Sub-Category (-) Alkaloids (2) Alpha Blockers (1) Antibiotics (2) Anticholinergics (2) Barbiturates (4) Benzodiazepines (3) Beta Blockers (1) Cyanide (2) Diuretics (1) (-) NSAIDs (1) Opiates/Opioids (10) Organochlorides (2) Other (37) Phenothiazines (4) Sedative-Hypnotics (1) Toxic Elements (10) Tricyclic (6) Vasoconstrictors (2) Test Test Name 4380B Theobromine, Blood 4380U Theobromine, Urine 4505B Tolmetin, Blood