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) (2) Sample Type (-) Blood (1) (-) Serum or Plasma (1) Urine (1) Test Area Therapeutics (2) Test Category Antiparkinsons (2) Test Sub-Category (-) Anticholinergics (2) Antiparasitics (2) Barbiturates (3) Calcium Channel Blockers (2) Non-Barbiturate Sedative Hypnotics (2) Organochlorides (1) Other (22) Phenothiazines (2) Sedative-Hypnotics (2) Tricyclic (4) Test Test Name 4680B Trihexyphenidyl, Blood 4680SP Trihexyphenidyl, Serum/Plasma