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 (1) Blood (2) (-) Fluid (1) Serum or Plasma (2) Urine (3) Test Area Drugs of Abuse (1) Test Category Depressants (1) Test Sub-Category Other (1) Test Test Name 9326FL Gamma-Hydroxybutyric Acid Screen, Fluid