Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Gas Chromatography (GC) (2) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (6) Fat (1) Fluid (1) Serum or Plasma (6) Tissue (2) (-) Urine (3) Test Area Exposure (2) Therapeutics (1) Test Category Industrial/Environmental Toxins (1) Muscle Relaxants (1) Other (1) Test Sub-Category Antispasmodics (1) Benzodiazepines (1) Opiates/Opioids (6) (-) Other (3) Test Test Name 1352U o-Cresol, Urine 1355U o-Toluidine, Urine 3248U Orphenadrine, Urine