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) (4) Sample Type (-) Blood (2) (-) Serum or Plasma (2) Urine (2) Test Area Test Category Test Sub-Category Test Test Name 5101B Gamma-Hydroxybutyric Acid Confirmation, Blood 5101SP Gamma-Hydroxybutyric Acid Confirmation, Serum/Plasma 9326B Gamma-Hydroxybutyric Acid Screen, Blood 9326SP Gamma-Hydroxybutyric Acid Screen, Serum/Plasma