Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) (-) Enzyme-Linked Immunosorbent Assay (ELISA) (1) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type (-) Blood (2) Fluid (1) Serum or Plasma (2) Urine (1) Test Area Drugs of Abuse (2) Test Category Analgesics (4) (-) Depressants (2) Muscle Relaxants (1) Psychoactives (1) Stimulants (1) Volatiles (1) Test Sub-Category Opiates/Opioids (1) Other (1) Test Test Name 9326B Gamma-Hydroxybutyric Acid Screen, Blood 9343B Heroin Screen, Blood