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 Anesthetics (5) Antianxiety (2) Antidiarrheals (2) Antiepileptics/Antiseizures (6) Antihistamines (4) (-) Antihypertensives (2) Antimicrobials (2) Antipsychotics (4) Dopamine Precursor (1) Hallucinogens (4) Immunosuppressants (4) Metals/Elements (5) Mood Stabilizers (2) Pesticides/Insecticides (2) Stimulants (2) Test Sub-Category Beta Blockers (2) Test Test Name 2488B Labetalol, Blood 2488SP Labetalol, Serum/Plasma