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 (2) Fluid (1) Serum or Plasma (2) Urine (2) Test Area Drugs of Abuse (1) Therapeutics (1) Test Category Antidiabetics (1) Antiepileptics/Antiseizures (1) (-) Antihypertensives (1) Antimicrobials (1) Cholinesterase Inhibitors (1) (-) Depressants (1) Expectorants (1) Metals/Elements (2) Sedative/Hypnotics (2) Solvents (2) Test Sub-Category Alpha-2 Adrenergic Agonists (1) Other (1) Test Test Name 2186B Guanfacine, Blood 9326B Gamma-Hydroxybutyric Acid Screen, Blood