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