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) Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (5) Sample Type Blood (2) Serum or Plasma (2) (-) Urine (2) Test Area Therapeutics (2) Test Category (-) Analgesics (2) Anticholinergics (1) Antidepressants (3) Antiepileptics/Antiseizures (1) Muscle Relaxants (1) Pesticides/Insecticides (1) Solvents (2) Volatiles (3) Test Sub-Category Opiates/Opioids (1) Other (1) Test Test Name 3400U Pentazocine, Urine 3525U Phenazopyridine, Urine