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) (1) Sample Type (-) Blood (2) Serum or Plasma (1) Test Area Exposure (2) Test Category (-) Depressants (1) (-) Gases (1) Test Sub-Category BAC (2) (-) Hydrocarbons (1) (-) Sedative-Hypnotics (1) Test Test Name 2745B Methane, Blood 4640B Trichloroethanol - Free, Blood