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) (2) Sample Type (-) Blood (1) (-) Fluid (1) Serum or Plasma (1) Test Area Therapeutics (2) Test Category Antihypertensives (2) Test Sub-Category Amphetamines (1) Antiarrhythmics (3) Antiparasitics (1) Benzodiazepines (2) (-) Beta Blockers (2) Insecticides (1) Metals/Elements (2) Other (16) Toxic Elements (2) Test Test Name 2488B Labetalol, Blood 2488FL Labetalol, Fluid