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) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (1) Sample Type Blood (1) Fat (1) Serum or Plasma (2) Tissue (1) (-) Urine (2) Test Area (-) Exposure (2) Therapeutics (9) Test Category Industrial/Environmental Toxins (1) Other (1) Test Sub-Category Other (2) Test Test Name 1352U o-Cresol, Urine 1355U o-Toluidine, Urine