Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (1) (-) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (17) Sample Type Blood (1) Urine (1) Test Area (-) Therapeutics (2) Test Category (-) Analgesics (1) Anesthetics (4) Antidepressants (3) Antiepileptics/Antiseizures (3) Antipsychotics (11) (-) Sedative/Hypnotics (1) Test Sub-Category Barbiturates (1) Opiates/Opioids (1) Test Test Name 4300B Talbutal, Blood 4303U Talwin® Nx, Urine