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 (3) Test Area Exposure (2) Test Category Anesthetics (2) Antianxiety (2) Anticholinergics (2) Antidepressants (4) Antiepileptics/Antiseizures (2) Antihistamines (3) Antipsychotics (1) Antitussives/Cough Suppressants (2) Diuretics (2) Muscle Relaxants (2) Plasticizers (1) (-) Volatiles (2) Test Sub-Category (-) Other (2) Test Test Name 0541B Benzene, Blood 0835B Butane and Isobutane, Blood