Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type (-) Blood (1) Serum or Plasma (1) (-) Tissue (1) (-) Urine (1) Test Area Exposure (2) (-) Therapeutics (3) Test Category Sedative/Hypnotics (3) Test Sub-Category Other (3) Test Test Name 4815B Xylazine, Blood 4815TI Xylazine, Tissue 4815U Xylazine, Urine