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 (GC) (20) (-) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Headspace Gas Chromatography (GC) (4) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (6) Spectrophotometry (SP) (1) Sample Type Urine (1) Test Area Exposure (1) Test Category Depressants (2) Drugs of Abuse (1) Gases (3) (-) Industrial/Environmental Toxins (1) Muscle Relaxants (4) Volatiles (1) Test Sub-Category Other (1) Test Test Name 1549U Dichlorobenzidine, Urine