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/Mass Spectrometry (GC/MS) (2) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area Drugs of Abuse (2) (-) Therapeutics (2) Test Category Analgesics (31) Anesthetics (1) Antianxiety (4) Antidepressants (11) Antipsychotics (2) Appetite Suppressants (1) (-) Sedative/Hypnotics (2) Stimulants (2) Test Sub-Category Barbiturates (2) Test Test Name 8633B Phenobarbital, Blood 8633U Phenobarbital, Urine