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) (21) Gas Chromatography/Mass Spectrometry (GC/MS) (1) (-) Headspace Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Spectrophotometry (SP) (1) Sample Type Blood (2) Serum or Plasma (2) Test Area Drugs of Abuse (17) (-) Exposure (4) Impairment (8) Test Category Volatiles (4) Test Sub-Category Other (4) Your search has returned no tests.