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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (2) (-) Serum or Plasma (1) Test Area Therapeutics (1) Test Category Anesthetics (1) Test Sub-Category Anticholinergics (1) Antiparasitics (1) (-) Barbiturates (1) Calcium Channel Blockers (1) Non-Barbiturate Sedative Hypnotics (1) Other (10) Phenothiazines (1) Sedative-Hypnotics (1) Tricyclic (2) Test Test Name 4450SP Thiopental and Metabolite, Serum/Plasma