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) Test Area Therapeutics (1) Test Category Antihypertensives (1) Test Sub-Category Antiarrhythmics (1) Benzodiazepines (1) (-) Beta Blockers (1) Metals/Elements (1) Other (1) Toxic Elements (1) Test Test Name 2488FL Labetalol, Fluid