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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (5) Fluid (1) Serum or Plasma (6) (-) Urine (2) Test Area (-) Drugs of Abuse (1) Exposure (1) (-) Therapeutics (1) Test Category Depressants (1) Expectorants (1) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Antivirals (1) GABA Analogues (1) (-) Other (2) Test Test Name 2185U Guaifenesin, Urine 9326U Gamma-Hydroxybutyric Acid Screen, Urine