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 (2) Fluid (1) Serum or Plasma (5) Tissue (1) Urine (1) Test Area Therapeutics (2) Test Category Antidepressants (3) (-) Antiepileptics/Antiseizures (1) Antihypertensives (1) Antimicrobials (1) Immunosuppressants (1) Metals/Elements (1) (-) Vasodilators (1) Volatiles (1) Test Sub-Category Other (2) Test Test Name 4757B Valproic Acid, Blood 4764B Vardenafil and Metabolite, Blood