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 (29) (-) Fluid (3) Serum or Plasma (32) Tissue (2) Urine (12) Test Area (-) Therapeutics (3) Test Category Antihypertensives (3) Test Sub-Category Beta Blockers (3) Your search has returned no tests.