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) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (2) Sample Type Blood (2) Serum or Plasma (1) Tissue (1) (-) Urine (2) Test Area Exposure (1) Therapeutics (1) Test Category Other (1) Sedative/Hypnotics (1) Test Sub-Category (-) Other (2) Test Test Name 4815U Xylazine, Urine 4821U Xylene Exposure Panel, Urine