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) (2) Sample Type Blood (1) (-) Serum or Plasma (1) (-) Tissue (1) Urine (1) Test Area (-) Therapeutics (2) Test Category Sedative/Hypnotics (2) Test Sub-Category Other (2) Test Test Name 4815SP Xylazine, Serum/Plasma 4815TI Xylazine, Tissue