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 (14) Fluid (2) Serum or Plasma (18) (-) Tissue (2) Urine (8) Test Area Therapeutics (2) Test Category Antidepressants (4) (-) Antiepileptics/Antiseizures (1) Antihypertensives (2) Antipsychotics (2) Biomarkers (1) Metals/Elements (4) Pesticides/Insecticides (1) (-) Sedative/Hypnotics (1) Test Sub-Category Other (2) Test Test Name 4757TI Valproic Acid, Tissue 4815TI Xylazine, Tissue