Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Gas Chromatography (GC) (17) Gas Chromatography/Mass Spectrometry (GC/MS) (4) (-) Headspace Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (50) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (1) Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (1) Exposure (3) (-) Therapeutics (3) Test Category Antiepileptics/Antiseizures (3) Test Sub-Category Opiates/Opioids (1) (-) Other (3) Your search has returned no tests.