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) (2) Sample Type Blood (25) Fluid (4) Serum or Plasma (27) (-) Tissue (3) Urine (12) Test Area (-) Therapeutics (3) Test Category (-) Antihypertensives (3) Test Sub-Category Beta Blockers (2) Calcium Channel Blockers (1) Your search has returned no tests.