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) (1) Sample Type (-) Blood (2) Tissue (1) Urine (2) Test Area Exposure (2) Test Category Alcohols (2) Antihistamines (2) Sedative/Hypnotics (1) (-) Volatiles (2) Test Sub-Category Other (2) Test Test Name 0541B Benzene, Blood 0835B Butane and Isobutane, Blood