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 (4) (-) Fluid (1) Serum or Plasma (4) Umbilical Cord (3) Urine (6) Test Area (-) Drugs of Abuse (1) Postmortem (1) Therapeutics (1) Test Category Depressants (1) Test Sub-Category Cannabinoids (1) (-) Other (1) Test Test Name 9326FL Gamma-Hydroxybutyric Acid Screen, Fluid