Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme-Linked Immunosorbent Assay (ELISA) (1) (-) Gas Chromatography (GC) (2) Gas Chromatography/Mass Spectrometry (GC/MS) (3) Headspace Gas Chromatography (GC) (1) Sample Type (-) Blood (2) Serum or Plasma (1) Urine (3) Test Area Exposure (1) Therapeutics (1) Test Category Alcohols (1) Analgesics (2) Anesthetics (1) Antianxiety (1) Antiarrhythmics (1) Anticholinergics (2) Antidepressants (2) Antiepileptics/Antiseizures (1) Antihistamines (2) Antithrombotics (1) Benzodiazepines (1) Depressants (1) Diuretics (1) Muscle Relaxants (1) NPS/Designer Drugs (2) (-) Sedative/Hypnotics (1) Stimulants (1) (-) Volatiles (1) Test Sub-Category Barbiturates (1) Other (1) Test Test Name 0500B Barbital, Blood 0835B Butane and Isobutane, Blood