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) (14) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (2) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (28) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (1) Serum or Plasma (1) Test Area Exposure (1) Postmortem (9) (-) Therapeutics (2) Test Category Antihistamines (2) Test Sub-Category Barbiturates (6) Opiates/Opioids (4) (-) Other (2) Test Test Name 3740B Phenyltoloxamine, Blood 3740SP Phenyltoloxamine, Serum/Plasma