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 (-) Depressants (1) Test Sub-Category Other (1) Test Test Name 9326SP Gamma-Hydroxybutyric Acid Screen, Serum/Plasma