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) (10) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (42) (-) High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) (1) Spectrophotometry (SP) (1) Sample Type (-) Blood (2) Serum or Plasma (4) Urine (2) Test Area Exposure (1) Therapeutics (1) Test Category Biomarkers (1) Sedative/Hypnotics (1) Test Sub-Category Anticoagulants (1) Cyanide (1) Opiates/Opioids (1) (-) Other (2) Test Test Name 4170B Secobarbital, Blood 4472B Thiosulfate, Blood