Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Gas Chromatography (GC) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (3) Sample Type Blood (23) (-) Fluid (4) Serum or Plasma (25) Tissue (3) Urine (11) Test Area (-) Therapeutics (4) Test Category (-) Antihypertensives (4) Drugs of Abuse (1) Test Sub-Category Beta Blockers (3) Calcium Channel Blockers (1) Your search has returned no tests.