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) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (1) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Analgesics (4) Anesthetics (2) (-) Antihistamines (2) Chemicals (1) Diagnostic Aids (1) Industrial/Environmental Toxins (2) Metals/Elements (2) Pesticides/Insecticides (1) Plasticizers (1) Sedative/Hypnotics (3) Solvents (4) Therapeutics (1) Vasodilators (2) Volatiles (1) Test Sub-Category Other (2) Test Test Name 3740B Phenyltoloxamine, Blood 3740SP Phenyltoloxamine, Serum/Plasma