Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) Sample Type Blood (4) Serum or Plasma (7) (-) Urine (1) Test Area Therapeutics (1) Test Category Acids (1) Alcohols (1) Analgesics (5) Anesthetics (2) Antacids (1) Anticholinergics (1) Antidepressants (5) Antiepileptics/Antiseizures (3) Antihypertensives (3) Antimicrobials (2) Antimigraines (1) (-) Antiparkinsons (1) Antipsychotics (5) Biomarkers (2) Bronchodilators (1) Cholinesterase Inhibitors (1) Decongestants (1) Hallucinogens (1) Metals/Elements (14) NPS/Designer Drugs (1) Opiates/Opioids (1) Other (1) Pesticides/Insecticides (1) Sedative/Hypnotics (5) Solvents (3) Stimulants (2) Sympathomimetic Amines (1) Terpenes (1) Vasodilators (1) Volatiles (3) Test Sub-Category Anticholinergics (1) Test Test Name 4680U Trihexyphenidyl, Urine