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 Antianxiety (2) Antiepileptics/Antiseizures (3) Antihistamines (1) (-) Antihypertensives (1) Antimicrobials (1) Hallucinogens (1) Laxatives (1) Stimulants (1) Test Sub-Category Beta Blockers (1) Test Test Name 2488FL Labetalol, Fluid