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) (1) Sample Type Blood (1) Fluid (1) (-) Serum or Plasma (1) Urine (1) Test Area Drugs of Abuse (1) Test Category Anesthetics (3) Antiarrhythmics (2) Anticholinergics (1) Antidepressants (2) Antiepileptics/Antiseizures (1) Antihistamines (1) Antipsychotics (2) Antitussives/Cough Suppressants (1) (-) Depressants (1) Hallucinogens (1) Muscle Relaxants (1) Sedative/Hypnotics (3) Stimulants (2) Test Sub-Category Benzodiazepines (2) Opiates/Opioids (1) (-) Other (1) Test Test Name 9326SP Gamma-Hydroxybutyric Acid Screen, Serum/Plasma