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 Alcohols (2) Analgesics (3) Anesthetics (1) Antianxiety (1) Antiarrhythmics (1) Anticholinergics (2) Antidepressants (2) Antiepileptics/Antiseizures (1) Antihistamines (2) Antithrombotics (1) Antitussives/Cough Suppressants (1) Benzodiazepines (1) Biomarkers (1) Depressants (2) Diuretics (1) Drugs of Abuse (1) Metals/Elements (5) Muscle Relaxants (1) NPS/Designer Drugs (2) Sedative/Hypnotics (5) Stimulants (1) (-) Volatiles (2) Test Sub-Category Other (2) Test Test Name 0541B Benzene, Blood 0835B Butane and Isobutane, Blood