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) Sample Type (-) Blood (1) Serum or Plasma (1) Test Area Drugs of Abuse (3) (-) Exposure (1) Test Category Acids (2) Alcohols (7) Biomarkers (2) (-) Depressants (1) Drugs of Abuse (3) Gases (1) Metals/Elements (1) Other (6) Perfluorinated Compounds (1) Pesticides/Insecticides (2) Solvents (18) Terpenes (2) Volatiles (42) Test Sub-Category Sedative-Hypnotics (1) Test Test Name 4640B Trichloroethanol - Free, Blood