Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Headspace Gas Chromatography (GC) (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 (2) Test Category Other (1) Sedative/Hypnotics (2) Test Sub-Category Other (3) Test Test Name 4815B Xylazine, Blood 4815TI Xylazine, Tissue 4820B Xylenes Panel, Blood