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) (1) Sample Type Blood (1) (-) Fluid (1) Serum or Plasma (1) Urine (1) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Benzodiazepines (1) (-) Beta Blockers (1) Opiates/Opioids (2) Other (3) Test Test Name 3043FL Metoprolol, Fluid