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) Headspace Gas Chromatography (GC) (4) Sample Type (-) Blood (1) Serum or Plasma (1) Test Area Exposure (1) Test Category Acids (2) Alcohols (3) Biomarkers (1) (-) Depressants (1) Industrial/Environmental Toxins (1) Other (3) Pesticides/Insecticides (2) Sedative/Hypnotics (4) Solvents (18) Terpenes (3) Volatiles (28) Test Sub-Category Sedative-Hypnotics (1) Test Test Name 4640B Trichloroethanol - Free, Blood